Upon remembering her true identity as Snow White, Mary Margaret is happily reunited with several of her friends from the Enchanted Forest, including Red Riding Hood, Granny, and the Seven Dwarves. She is most excited to remember Prince Charming and her daughter Emma. While Mary Margaret is overjoyed to see Emma and realizes she saved them all by breaking the curse, she is a little stunned when Emma states she needs time and space to adjust to the new situation. Suddenly, Archie rushes up to inform them that Dr. Whale is leading an angry mob to Regina's house. Prompted by Henry's concern for Regina, they make it in time to stop Dr. Whale. They decide to place Regina in a jail cell for protection and then confront Mr. Gold for his misdeeds. Instead, they learn Mr. Gold released a Wraith upon town to destroy Regina. They temporarily stop the creature, but Regina has a more permanent solution by using a hat to send it away. After the vortex opens, the Wraith is sucked in, but Emma is as well. Horror stricken, Mary Margaret declares her intent of not losing Emma again, and jumps into the portal. The two women land in the Enchanted Forest and are found by Aurora and Mulan. ("Broken")
Mary Margaret and Emma are accused of killing Prince Phillip and taken hostage by Aurora and Mulan, who then take them to a survivors' haven. Mary Margaret makes an attempt to escape, but is knocked unconscious by Mulan. For the time being, she and Emma are forced into a holding pit. ("We Are Both")
She awakens, and is unsettled by Cora's presence in the pit with them. Mary Margaret discourages Emma from speaking to her any further. Emma, however, is willing to take the chance since they have no one else to rely on to help them get back to David and Henry. Cora tries to ask about Henry, but Mary Margaret cuts her off. Then, the two are released to speak with the leader of the survivors, Lancelot, who Mary Margaret has a friendly reunion with. He offers to help them return home, but insists no more portals exist. Mary Margaret knows of one possibly in existence, so the two women travel to the location with Mulan. Near nighttime, they decide to camp out. Mary Margaret and Mulan go off separately to gather supplies. Out of nowhere, she is attacked by Aurora, who blames her for Phillip's death, and wants revenge. Mary Margaret pins Aurora to the ground with ease and states she knows what it's like to lose someone, too, but Phillip's death is not her fault. Mulan pries Aurora away as Emma, in annoyance, fires her gun, and unintentionally attracts an ogre. Emma is nearly killed by it, but Mary Margaret takes out the ogre by shooting an arrow in its eye. Despite not using a bow and arrow for twenty-eight years, her skill in archery is still sublime. Continuing on, they reach the old castle of Snow White and Prince Charming. Aurora and Mulan wait outside as Mary Margaret and Emma go inside. Inside, Emma's unused nursery room still stands, as does the magic wardrobe that took her away. Mary Margaret laments over the life they would have had as a family. They receive an unexpected appearance by Lancelot, but Mary Margaret notices his prolonged interest in the wardrobe. She goes on the defense, to which the mask of Lancelot melts off to reveal Cora. Cora battles them for the wardrobe, but Emma sets it on fire. In the end, Cora is forced to flee. As a cover story for the safe haven survivors, Mary Margaret suggests telling them Lancelot died a hero since the man she once knew in the past was brave. Mary Margaret rejects Mulan's offer to make her leader as she and Emma have a family to get back to. Before leaving, Emma becomes emotional while talking about her parents' abandonment, but now knowing they sacrificed so much for her, too. They bond as Mary Margaret reassures Emma that she is looking out for her. ("Lady of the Lake")
Returning to the safe haven, the four women find that the camp has been attacked and no one appears to be left alive. Aurora discovers Hook beneath a pile of bodies, and he attempts to deceive the foursome by stating he survived Cora's attack on the camp by hiding under some dead bodies. Emma doesn't buy his story and ties Hook to a tree so the ogres can eat him. Unable to best Emma, Hook reveals his true identity as a shocked Mary Margaret pulls his hook out of his satchel. Hook admits to working with Cora, but offers to join forces with Emma and her team as he knows a way to get to Storybrooke. Most of all, he wants to go to Storybrooke to get revenge on Rumplestiltskin for taking away his hand. Emma decides to cut him free. Then, he leads them to a giant beanstalk stretching up into the sky, and explains there is an enchanted compass at the top, but first they must deal with the giant guarding it. ("The Doctor")
Mary Margaret volunteers to go up the beanstalk; citing herself as more familiar to the Enchanted Forest than Emma. However, Emma overrides this decision and departs up the beanstalk with Hook. While they wait for them to come back, Mulan decides it would be best for the three of them to take turns on watch duty. Aurora presses to be on duty first due to the horrible nightmares she has been having. Mary Margaret recognizes that Aurora is suffering from a side effect of the Sleeping Curse, which she herself went through at one time, but only says that the nightmares will go away in time. Later, Mary Margaret comforts Aurora after she awakens from another bad dream, and describes frightening imagery of an exit less room surrounded by curtains and flames. She manages to coax the girl into going back to sleep. After ten hours go by, Mulan, going by orders Emma secretly gave her earlier, begins cutting down the beanstalk. Mary Margaret reacts with protest and wrestles Mulan to the ground. They scuffle until Emma jumps down from the base of the beanstalk alone, as she left Hook trapped with the giant so they can have a ten hour head start. ("Tallahassee")
Mary Margaret rushes to console Aurora as she comes to from another nightmare. Shockingly, Aurora claims she met a boy named Henry in her dream. ("Child of the Moon")
As Aurora relates her encounter with Henry to everyone, Mary Margaret finally speaks up about the nightmares being a side effect of the Sleeping Curse. Aurora is upset that she wasn't informed of this earlier, though Mary Margaret simply didn't want to burden her with it. They decide to let Aurora go back to sleep and stand guard over her. Suddenly, the camp is attacked by Cora's army of heartless humans, and Emma and Mary Margaret defend themselves while Aurora and Mulan run off into the woods. After the battle, Aurora is discovered to be missing and in Cora's captivity. Without Aurora, they can't reach Henry, though Mary Margaret was once under the Sleeping Curse, too, so she is capable of travelling to the Netherworld under special circumstances. As they head to gather a special poppy dust to put Mary Margaret to sleep, a raven from Cora gives them a message. Cora wants the compass by sundown in exchange for Aurora's safety. Mulan attempts to grab the compass, but then agrees to wait and see if they can contact Henry first. After entering the Netherworld, Mary Margaret waits in the flame filled room for Henry, but is stunned to see David instead. Quickly, he tells her about the squid ink located in Rumplestiltskin's cell. She learns he is currently under the Sleeping Curse, and they lean in for true love's kiss, but their bodies cannot touch. Mary Margaret has no choice but to leave him behind as she begins waking up from the Netherworld. She reaches consciousness in a panic over David's dilemma while Emma is certain everything will be fixed once they get home. They realize Mulan made off with the compass and catch up in time. Mary Margaret tackles Mulan when she refuses to give her the compass, and nearly kills her before Aurora reappears to break up the fight. The four head off towards Rumplestiltskin's old cell to find the squid ink. ("Into the Deep")
As they arrive to the cell, Aurora finds a strange note with Emma's name written on it repeatedly. Mulan also discovers an empty vial, but no squid ink. Suddenly, Aurora throws a rock at the cell door switch and entraps them inside. Cora approaches to magically snatch the compass out of Emma's hand and thanks Aurora for the help. Angrily, Mary Margaret berates Aurora for assisting an enemy, though Cora reveals she has the girl's heart in her possession. Cora squeezes it as a demonstration; causing Aurora physical pain. Soon after, Cora and Hook leave to begin making preparations for a journey to Storybrooke. While trapped in the cell, Mary Margaret figures out there is squid ink on the note and uses it to melt away the cage bars. At Aurora's insistence she cannot be trusted, Mulan binds her up. They hurry to Lake Nostos where Mary Margaret fires an arrow to shoot the compass out of Cora's reach. While Mary Margaret tries to catch Cora with her arrows, Mulan parries the woman's magic with her blade. Mulan quickly leaves the battle to restore Aurora's heart after Hook returns it. Then, Hook is passes out after being clocked by Emma. In turn, Emma is flung aside by Cora as she stalks forward to remove Mary Margaret's heart. Mary Margaret is unable to fight back, but is shoved away by Emma just as Cora reaches in. This causes Cora to grab Emma's heart, but she finds herself incapable of pulling it out. A burst of light shoots out of Emma's chest; knocking Cora unconscious. Joining hands, Mary Margaret and Emma leap into the portal. Successfully, they reenter Storybrooke from within the wishing well. Henry has a tremendously emotional return with both of them. Mary Margaret is surprised, and skeptical, to learn from Henry that Regina helped to ensure their safe return. She rushes off to the pawnshop to awaken David with true love's kiss. To catch up on lost time with her family and friends, she, David, Emma Henry, Ruby and the dwarves have dinner at Granny's. ("Queen of Hearts")
On one afternoon, Emma and Henry go out shopping in preparation for the evening celebration party at Granny's. While they are gone, Mary Margaret and David have some intimate alone time. When caught, both attempt to hide under the covers, though Henry seems to buy their excuse that they are just resting up. In private, Mary Margaret is apologetic towards Emma since they assumed both of them weren't going to be back until much later. Emma blusters that they should give a warning next time and embarrassingly walks off to make tacos. David jokes that it's impressive how they can still provide their daughter with traumatic childhood memories this late in her life. At the party, Mary Margaret arrives with her husband and daughter just as David calls for a toast in honor of his family's safe return. Suddenly, the diner door opens when Regina walks in with a plate of homemade lasagna. Her presence displeases some of the guests, but Emma vouches that she invited Regina. As the guests disperse, Mary Margaret and David express concern about Regina being at the party. Emma states that she owes Regina for helping them return to Storybrooke, and planned on telling her parents, but they were a little busy this afternoon. Mary Margaret insists Regina tried to have them killed yesterday, but Emma believes the mayor is trying to change for Henry's sake. They let the topic drop once Emma is certain that Regina should be given a chance to change from the past. The next morning, Archie is found dead in his office. Mary Margaret watches from outside the interrogation room as Regina is questioned by David and Emma. Regina appeals to Emma that she has done everything to change thus far and wouldn't throw it all away by killing Archie. While Mary Margaret and her husband firmly believe Regina is the main suspect, Emma is still not convinced she has done anything wrong and believes Mr. Gold is framing the mayor. They head to the pawnshop where Emma is given a dream catcher to look into the memories of only witness of Archie's death, Pongo. In it, she sees Regina murdering Archie. As a plan, they agree Regina must be trapped with fairy dust. The trio confront Regina on her doorstep about what she did. Mother Superior, on cue, attempts to freeze Regina, but she catches the dust in midair and tosses it aside. In a bout of intense rage, Regina uses magic to physically shove Emma away. Angrily, Emma confirms Henry will never forgive Regina after this and that she is a person not capable of changing. To this, Regina disappears in a cloud of smoke. With reassurance from her parents, she breaks the bad news about Regina to Henry. ("The Cricket Game")
At Archie's funeral, Mary Margaret eulogizes him. Afterwards, she goes back to her apartment where other residents of Storybrooke are also gathered in mourning. Emma speaks to Mary Margaret about how sad Henry is over the death of Archie. Leroy approaches Mary Margaret and Emma to ask, on behalf of himself and other dwarves, when they will be returning to the Enchanted Forest. While Emma argues she and Mary Margaret did everything in their power to return to Storybrooke, Leroy is anxious about what is Regina's next move, and whether the broken curse means outsiders will have the capability to come into town. Emma believes they are safe for now while Leroy believes that trouble will happen sooner or later. Much later in the day, Mary Margaret discovers Henry is listening to Archie's answering machine. The boy cheers up when Emma walks in to give him ownership of Pongo as Marco allowed. Mary Margaret and David agree things might get a bit cramped with all of them living together. However, David is shocked when Mary Margaret suggests the two of them move out and let Emma and Henry have the apartment. The couple leave for the diner where she shows her husband various possible houses, but he turns down every one. While she desires a house of their own, David wishes to return to the Enchanted Forest. Mary Margaret protests that even if they do go back, the land they once knew is not the same with Cora in power and the ogres taking over everywhere. Though there are ongoing problems in the Enchanted Forest, he sees it as a good reason to fight for what is theirs. However, Mary Margaret states she is tired of always fighting, and wants a fresh start in Storybrooke. She and David later learn from Emma that Archie is alive, and was kidnapped by Cora, who apparently found a way to Storybrooke. ("The Outsider")
After a car crashes into Storybrooke, Mary Margaret and David accompany Emma on the drive to the scene. They observe an amnesiac and frightened Belle who crossed the town line, a run-over Hook with multiple cracked ribs and a passed out stranger in the crashed car. Mary Margaret tries to soothe a terrified Belle until they reach the hospital, where she passes the girl off to a nurse. Mary Margaret, David Emma, Leroy and Ruby try to break into the stranger's phone to learn who he is. After reviewing some paperwork left in the man's car, Emma sees that his name is Greg Mendell. From hacking into the phone, he looks to be a normal person. Dr. Whale comes back from checking up on Greg and says the man is bleeding into his chest cavity. Unsure of his own skill, Dr. Whale consults Mr. Gold for help, but he refuses and only warns that they should hope Greg dies so an outsider can't spread their town's magic secret to the whole world. They go into a separate room to debate about the pros and cons of helping someone from outside of town. Ultimately, the decision is made to save the stranger's life no matter what. Dr. Whale leaves the room to prep for the surgery, and Mary Margaret remarks how drunk he appears to be. Suddenly, Greg's phone starts ringing. No one dares to answer in fear the phone might be traced to Storybrooke. As they are waiting for the surgery to finish, a male nurse cannot find Dr. Whale, whose pager is the pocket of his disposed lab coat. Ruby runs off to track Dr. Whale by scent and brings him back to perform the operation on Greg. The surgery is a success and Emma goes in to gather information from Greg about what happened. He confesses to texting while driving. With a breath of relief, Emma and her parents return to the apartment. Henry wishes to know the day's events and after being filled in, he realizes the Frankenstein story is not a fairytale nor does it exist as in the storybook. Abruptly, Mr. Gold pays them a visit to ask Emma to fulfill the favor she owes him by helping find his son Baelfire. Just before he leaves, Mr. Gold also warns if any harm comes to Belle while he is gone, he will kill them all. ("In the Name of the Brother")
In the morning, Emma brings Henry, who she wishes to protect from Cora, along for departure out of town with Mr. Gold. Afterwards, Mary Margaret and David receive Regina at the door. Again, she denies killing Archie, to which they apologize for suspecting her since he turned up alive. They also mention that Emma left town with Henry, which upsets Regina. After Hook is released from the hospital, Mary Margaret, David and Leroy question his alliance with Cora. He leads them onto his ship to show them a caged shrunken giant who Cora brought from the Enchanted Forest. They free the giant, Anton, who reacts in fury when he sees David. He proceeds to lash out at them, which Mary Margaret quickly stops by shooting an arrow at him. Anton leaves the ship, but promises David will pay for what he has done. At the diner, David is still confused about what the giant said until realizing he was mistaken for his brother, James. Soon, he, Mary Margaret and Leroy have to defend the town against a much larger Anton, who begins taking out his anger on humans. David directs all the residents to take cover at town hall while he attempts to clear up the misunderstanding with Anton. Leroy helps win over Anton by mentioning Emma was given the compass by him. Anton wishes to speak to Emma, but she is not in town, so he continues with the rampage by chasing the three down. Finally, David proposes to give up his own life to Anton so he spares the townspeople. As Anton moves to stomp on him, the three are blown back by the debris as the impact of the pound hits the ground. Anton, now back to human size, falls into giant-made hole clinging on for dear life. The townspeople work to help David scale down into the hole with a rope and pull Anton to safety. They introduce Anton to the diner in an effort to make him feel at home. As they talk, Mary Margaret mentions Storybrooke is their home now since there is no way of getting back to their old land. To this, Anton shows them a stem of a beanstalk that can grow magic beans. They let Anton inspect some soil content, which is suitable for planting the stem, as the seven dwarves arrive to help him. Mary Margaret and David leave them to it and briefly discuss the what-ifs had he been raised by King George rather than his twin, and then the topic turns to returning to the Enchanted Forest. While Mary Margaret doesn't want to leave Emma behind, David is sure that their daughter will be fine with Henry. ("Tiny")
Over the phone, she talks to frantic Emma in New York, who just discovered her ex-boyfriend Neal is Mr. Gold's son. As if that weren't complicated enough, Neal is Henry's biological father. Mary Margaret advises her to be honest with Henry about his father's identity. She perceives the reason Emma may be withholding the information might have more than do with herself than Henry. When Mary Margaret tells her husband the news, David is astonished that this not only connects Regina, but also Mr. Gold to their family tree. He quips that it's a good thing they did not have Thanksgiving in the Enchanted Forest, or otherwise it would have been one messed up holiday. Mary Margaret toys with the idea that this familial connection will be the key to bringing everyone together. ("Manhattan")
On her birthday, Mary Margaret suspiciously notices David making pancakes. Though he feigns hunger, she can obviously tell what is going on. As an unspoken conflict, Mary Margaret hates celebrating her birthday because her mother's passing occurred on the same date. On the table, she notices a nearly wrapped present, which David claims is not from him. She opens the box to find the tiara she once received from her mother, Eva, on her coming-of-age birthday, and a card note from an old friend, Johanna. After a quick kiss, Mary Margaret heads out to look for her. In a garden behind a house, she finds Johanna planting snowdrop flowers. The two hark back to their times in the Enchanted Forest, which includes their memories of Eva. Mary Margaret hears a strange noise from the woods and goes to investigate; discovering Cora and Regina discussing their plans to find Mr. Gold's dagger to force him to kill whoever they wish. Following this sighting, she tries to phone Mr. Gold, but he is not picking up. Upon entering the sheriff department, she finds David unconscious after being previously knocked out by Hook. Mary Margaret fills him in about Cora and Regina's alliance. They conclude the mother-daughter pair want it to either control Mr. Gold or make Cora the Dark One. She conceives a plan to instill doubt in Regina regarding Cora's motives, and tells the mayor over the phone to come to the diner so they can discuss Henry. Once Regina shows up, Mary Margaret gives her the third degree about being allies with Cora. She offers her one last chance to do the right thing by choosing good over evil. Regina states she always has been good, but Mary Margaret suggests that all her actions thus far have been evil. Regina wants Mary Margaret to stay out of her business. As she gets up to leave, Mary Margaret pleas that Cora does not care about her or Henry. In a blatant jab at Mary Margaret, Regina asks her what she knows about mothers, considering hers died a long time ago. Since the talk went badly, she and David try to procure the dagger's location from Mr. Gold by asking Emma to convince him. In the meantime, they unsuccessfully attempt to break into the pawnshop with Mother Superior's powers. Desperate, Mary Margaret recommends using dark magic if that's what it takes to get the dagger, and reminds Mother Superior of the "secret" she kept of hers. The head nun, however, is utterly confused and has no idea what she is talking about. Finally, they reach a breakthrough when David learns from Emma that the dagger is in the clock tower and nab it in time. Before they can leave, Cora and Regina materialize; threatening to crush Johanna's heart unless they get the dagger. During this altercation, Mary Margaret learns that Cora poisoned Eva to death, and she, not the Blue Fairy, was the one who gave her the enchanted candle. Left little choice, Mary Margaret gives the dagger up to them, but Johanna is cruelly killed by Cora shortly afterwards. The couple honor Johanna by burying her in the cemetery. Heartbroken over the cost of an innocent life, Mary Margaret vows to prevent more unnecessary deaths by killing Cora herself. ("The Queen Is Dead")
In a phone discussion with David, Mary Margaret discusses the seriousness of Mr. Gold's wound. Unknown to both, Cora and Regina are listening in through a phone tap. When the Jolly Roger arrives in Storybrooke, Mary Margaret and David help a weakened and injured Mr. Gold onto a truck. Again, she brings up to David of her plans to kill Cora and protect their family. He reasons that she would not be able to live with herself after murdering someone. After a return to the pawnshop, Mr. Gold deliberately causes Mary Margaret to stumble upon the enchanted candle, which is the same one she was given as a child to possibly save her mother's life by forfeiting someone else in her place. Since Cora is a threat to both of them, Mr. Gold wants Mary Margaret to kill her and save him. Though the candle's spell works by whispering the name of the intended victim over the person's body, it is also possible by doing the same with Cora's heart. She is given the location of the heart in a vault to enact the curse and then, as a follow-up so the candle's spell will kill their nemesis, is to stick it back into Cora. For a moment, Mary Margaret considers nabbing Cora's heart and manipulating her into finishing off Mr. Gold. However, he warns Henry, who is his newly discovered grandson, won't take his death lightly. Out of nowhere, the building begins shaking, signaling Cora and Regina's arrival, and the foursome assemble for a fight. In the midst of the battle, Mary Margaret slips away to the vault. After finding Cora's heart in a box, she lights the candle and whispers her name over it. On her way out with the box, she offers it to Regina. Mary Margaret persuades Regina into believing Cora can only feel genuine love if she has her heart. Just as she expected, the madam mayor departs with the heart box dead-set on returning it to Cora. Instead of feeling relieved, Mary Margaret immediately begins to regret her actions. Once David finds her, they rush to the pawnshop to stop Regina, but arrive to see Cora is already dead as a result of the cursed heart. ("The Miller's Daughter")
After Cora's death, Mary Margaret becomes despondent, and lays depressed in bed. Regina comes to steal her heart to create the curse of the empty-hearted, but she is guarded by Mr. Gold. Eventually, once Regina destroys the curse, Mr. Gold decides to leaves; his services no longer required. Before he does, Mary Margaret asks him how he lives with himself with all the terrible things he has done; slightly referring to what she did to Cora. Mr. Gold responds by saying it gets easier by telling himself he did the right thing.
She goes to Regina and begs to be killed. However, Regina, who realizes Mary Margaret's heart is becoming blackened; removes it from her chest and shows a dark spot inside it. Regina is pleased because this means the darkness will only grow in Mary Margaret's heart, and it will destroy the happy little family Mary Margaret tried so hard to create. She pushes the heart back in and asks Mary Margaret to leave; believing this way would be a worse punishment. ("Welcome to Storybrooke")
Mary Margaret is still having a hard time accepting what has come to pass since her confrontation with Regina, and tells no one about what occurred. She isolates herself by continuing to stay in bed. While David is quick to coddle her, and continues to make breakfast to put beside her bed, Emma believes enough time has passed for Mary Margaret to move past what she can't change. Mary Margaret lays awake under the covers listening to their conversation, and unexpectedly gets up to pack a few things into her bag before heading out into the woods to think things through. David wants to come with her, but she insists she must do this alone.
In the woods, she puts her music player on blast as she practices archery. Every arrow except one hits the tree trunk target, and when one misses, Mary Margaret takes off her earbuds and hears what sounds like something wooden moving. She travels deeper into the woods to investigate, and finds the arrow lying on the ground with a broken shaft. Following the trail, she comes across an old trailer. Inside, a completely wooden August is hiding; ashamed of his many mistakes in life. She tries to convince August he has no reason to hide, and the people of Storybrooke care about him; like Emma and his father, Marco. He refuses to go back, and does not want his father seeing him in this state. She explains many things have happened since he has been gone; such as Henry's father, Neal, returning. Neal stops her and asks if Emma and Neal are back together again. She says Neal is actually engaged to someone else he met in New York. August is saddened by the news. He had hoped though he purposely separated the couple years ago that they might be back together now. August wants redemption despite the bad things he has done, but he laments perhaps there are things someone can't come back from. Mary Margaret disagrees. Despite what he has done, everyone deserves a second chance. August explains it's easy for her to say so because she's never needed forgiveness or redemption; not knowing what has transpired between her, Regina and Cora. She states it is time for him to stop feeling sorry for himself, but he asks her to leave if she truly wants to help him.
She goes to the diner to find Emma, and runs into Regina on her way in. Regina curtly says she should try the fish special—a "blackened sole" as it suits her quite well. Mary Margaret is momentarily stunned by her words, but hurries to the counter where Emma sits waiting. Emma wonders what could be so urgent. Mary Margaret spills the beans about where August is, and Marco, who is sitting next to Emma, overhears and wants to see him. They have no means of helping him, but perhaps Mother Superior can, and they leave to speak with her.
Outside the nunnery, Mother Superior admits she knows about August's current dilemma. He came to her shortly after the curse broke to ask to be turned back to normal, but she could do no such thing if he has not stayed selfless, brave and true, which he did not. Mary Margaret agrees August has done some things which are regretful, but everyone should have a second chance. Mother Superior states if there is still a path of redemption for August, he must travel it on his own terms. Marco is sad over the news, but Mary Margaret believes there is hope for August.
Mary Margaret, Emma and Marco travel through the woods back to August's trailer. Marco says the state August is in at the moment is completely his fault, but Mary Margaret's perspective is the choices children make are their own decisions, and there is no use blaming himself. Marco finally comes clean about the true power of the wardrobe that could protect two people instead of one, and he selfishly wanted to save his son, so in exchange for carving the wardrobe, the Blue Fairy said the wardrobe could save only one so Pinocchio could go through, too. Mary Margaret is shocked at his confession, and in disbelief says she could have gone with Emma through the wardrobe. He is extremely apologetic, but a rage builds up in Mary Margaret at the revelation, and she hits Marco in the face. Emma asks what she is doing when Marco is apologizing, which Mary Margaret herself is just as surprised at her own action. Mary Margaret says she is not herself, and she forgives him because she would have done the same for her own child.
They finally reach August's trailer, but he is nowhere to be found inside. With no choice but to head back, Emma receives a phone call from August on their journey back into town. The phone call ends as abruptly as it began. The trio; joined on the way with David and Henry; go to the sheriff's office where August made the phone call. They nearly reach the front entrance in time to see August stumble out the door, and collapse onto the ground. Mary Margaret looks on with David and Henry as Emma and Marco attempt to help August. Before he dies, August tries to tell Emma something, but is unable to get the words out. Mary Margaret doesn't want it to end this way for August; still having the firm belief he is supposed to get a second chance.
Then, Henry realizes August can have a second chance because for the first time in a long time, he may have proven his actions to be selfless, brave and true. Mother Superior rushes over to the scene, and agrees if August's actions today have been selfless, brave and true, then she can restore him. She tests it out with her wand, and August reverts from wood back into a seven-year-old Pinocchio.
Afterwards, back in the apartment, Mary Margaret confesses to David she previously went to see Regina, and what conspired between them. David is furious because Regina could have killed her, and Mary Margaret says that's the reason she went in the first place. She could not deal with what she had done to Cora, and now her heart is starting to blacken as a result of it. David asks why she did not tell him, and she sadly states because if she did, what is happening now would be real and she wanted to believe it wasn't. Mary Margaret doesn't think there is a way to stop her heart from blackening, or to seek redemption. David sets August as an example that redemption is possible, though she notes it cost August everything to find his way back. David knows Mary Margaret is neither like August or Regina, and they will definitely find another way to help her because he believes in the goodness in her heart. ("Selfless, Brave and True")
To protect the bean fields from being seen by outsiders, Mother Superior enacts a barrier to make the area appear as an empty field unless someone stepped inside the barrier. Mary Margaret and David surprise Emma by driving her to the bean fields and showing her what they are growing. Emma is perplexed that Mary Margaret has changed her mind about staying in Storybrooke. Mary Margaret reasons dealing with the aftermath of Cora's death has been tiring for her heart, and by going back to have a fresh start in fixing the land, perhaps she can heal her heart too. They believe if Emma comes with them, she can also have her happy ending that never was.
After sundown, David carpools Anton, Leroy, Happy, Bashful, Walter, and Doc and drop them off at the diner. Despite Leroy's invitation to have dinner with them, David and Mary Margaret head home for the night. From across the street, Regina waits for them to clear the area and uses a tracking spell on David's previous car route, which leads her straight to the hidden bean fields. ("Lacey")
At the dock, Mary Margaret and David have a quiet evening sitting at a bench by the harbor. They discuss what will happen to Regina once they go back to the Enchanted Forest. While Mary Margaret accepts Regina is still Henry's mother, David dislikes the idea of bringing her along and allowing her to live among them. He suggests they give her an ultimatum to either stay in Storybrooke or live out the rest of her days in Rumplestiltskin's old cell. Secretly, Regina overhears their plan.
Leroy tags along with Mary Margaret and David for a drive to visit the bean fields. Mary Margaret mentions they will definitely need Leroy's help in fixing up the castle once they return home. They enter the outside barrier, and are troubled by the sight of whole rows of destroyed beans. ("The Evil Queen")
Armed with the suspicion Regina foiled their aim to return to the Enchanted Forest with the use of the beans, Mary Margaret, David, Emma and Henry hasten to the mayoral office. Upon entry, Regina is nowhere in sight and the stolen beans missing as well. Not believing Regina would leave Storybrooke without Henry, things seem even less right when Emma uncovers that someone used an override code to break into the office. She goes back to her assessment Tamara might be the one behind it, though Mary Margaret and David don't understand why Emma believes so strongly Neal's fiancée fits into the picture. Instead, Mary Margaret suggests the only one capable enough of overpowering Regina is Mr. Gold.
While Emma goes back to Neal to investigate further on the matter, Mary Margaret and David track down Mr. Gold at his shop. They interrupt him at his leisure with Lacey, who is exasperated at the intrusion. The twosome ask for a way to locate Regina, and he helps them due to being indebted to Mary Margaret after she saved his life from Cora. Bringing out a small bottle containing one of Regina's tears, Mr. Gold asks her to think of a bleak moment and shed one of her own tears. On command, Mary Margaret does and one of her tears mixes with Regina's in the bottle. Afterwards, he instructs she must put the liquid into her eye so a temporary bodily connection with Regina can be breached.
The two return to the apartment where Mary Margaret eyedrops the liquid in and begins experiencing shocking physical symptoms of Regina being tortured by someone. She gets a short, frazzled glimpse into Regina's surroundings in sight and smell, but after the link wears off, is unable to recall anything except a recollection of a strange scent of sardines. David reports back to Emma on Mary Margaret's findings. Instinctively, Emma realizes there is only one place in Storybrooke that smells like sardines, which is the town cannery. They meet up with Emma and Neal inside the building, and form a plan to secure the rooms. Mary Margaret and David race ahead and catch Greg in the act of electrocuting Regina to death. They stop him just in time. Though David wants to go after Greg, Mary Margaret is more concerned about the damage inflicted on Regina. After bringing her back to the apartment, Mother Superior heals Regina back to full health.
Mary Margaret is stunned to learn from Regina that she previously planned to use a trigger to erase Storybrooke and everyone in it for good. Regina expresses anger and justification for it as they planned to leave her in Storybrooke and take away Henry as well, but also brings up the grievous point the trigger is now in Tamara's hands. Emma returns to the apartment alone in a state of shock. Torn, she breaks the news to her parents that Neal is dead. ("Second Star to the Right")
David, Emma and Mary Margaret head to the park via truck to pick up Henry, who has been watched over by Granny. Once there, they have a surprise encounter with Mr. Gold. The older man claims since Neal wants nothing to do with him, he's spending time with his grandson. Grimly, Mary Margaret tells Emma to speak with Henry first, to which she goes off to do. As her parents give Mr. Gold the news of Neal's death, she tells Henry.
Despite David and Mary Margaret's attempt at convincing Mr. Gold to help them stop the trigger, he refuses. The trio return to the apartment with Henry, where he has a warm reunion with a fully recovered Regina. Once the shaking subsides, Emma voices her hunch about what that was about. Regina admits the trigger was activated, which Henry takes to mean they are all going to die, but is reminded by her that he was born in this world and won't be affected. This gives him an even more dreadful conclusion of being all alone. Emma promises she won't let that happen and orders Regina to make the trigger stop, but there is no way of doing that. Tension fills the air when Emma blames Regina for the current dilemma, to which Henry intervenes. Just then, Hook strolls in; earning himself a punch from David's fist. Despite an undeniable wish for vengeance, Hook has decided to align himself away from Greg and Tamara since realizing revenge is not worthy if he is going to lose his own life in the process. Regina makes it clear there is no terminating the trigger and the best she can do is to slow it down. David suggests the delay will give them more time to steal back the remaining beans from Greg and Tamara, use them to open portals, and travelling to the Enchanted Forest. Emma points out no one knows their current whereabouts, though Hook chimes in he knows. To keep the pirate from betraying them, David goes along with him. A plan assembles for everyone else in the group; Mary Margaret will take Henry to gather up the rest of the townspeople while Emma brings Regina to the mines to stall the trigger's power.
Having retrieved at least one magic bean, David and Hook return to the diner where some of the townspeople are grouped. Henry questions where his adoptive mother is, and Emma tells him that she is in the mines slowing down the trigger, but will not be able to make it out. This angers Henry; comparing this event to the Wraith attack and how are things different this time around. This gives Mary Margaret an idea—they can send the trigger through a portal just like they did with the Wraith. Emma doesn't believe anyone is willing to go through with such a risky plan, but Archie persuades her it's the right thing to do. He talks about in the past when Mary Margaret was Snow White and David was Prince Charming, who led all of them without fail, and asks who is inclined to allow them to do it again, to which everyone follows suit in agreement. Mary Margaret knows she and David haven't had a lot of time to be parents, but asks for chance to be trusted, though Emma is concerned Henry will be alone and grow up just like herself. Another rumble tremors through town, which pushes Emma to think they'd all be better off making it out now by using the bean, but Mary Margaret's lingering guilt about Cora forces a moral obligation to do otherwise. She pleads to Emma that Cora's death was the easy way out as well as a mistake, and this time around they must take the hard path to building a future not at the cost of Regina's blood. Emma finally agrees, but as David tosses her the bean container, Hook snatches it in mid-air. She makes him give it back, which he pretends to do by handing back the box and makes off with the actual bean.
Down in the mines, Henry and his family meet up with Regina, and he announces it is their turn to be heroes. Mary Margaret, Henry and David stand back as Emma prepares to take out the bean, but discovers Hook tricked them. Regina's frustration in not being able to contain the trigger causes Emma to realize she does not have enough strength on her own, but perhaps together they do. Combining their magic powers, an impact blow in deactivating the trigger causes everyone present to be thrown back onto the ground. After the danger is over, David expresses relief since they listened to Henry about not leaving Regina behind. However, Henry is nowhere to be seen. They find his backpack on the ground with torn straps. Emma deducts he has been kidnapped.
They rush off to save Henry from Greg and Tamara, but are not fast enough. Horrified, they watch as a portal opens in the water and Henry is forced to jump in along with Greg and Tamara. After the portal closes, Mary Margaret and David have to hold back an anguished Emma. Mr. Gold and Belle pass by the harbor and overhear their discussion about Henry's disappearance to another realm. Regina begs him to help, but he says there is no way to go across lands unless a portal can be opened. The whole group is despondent until Belle, transfixed, stares out at the ocean's distance and points out a ship, the Jolly Roger, still sitting in port. After discovering Hook didn't leave using the magic bean he stole, the pirate allows them to board the ship in going after Henry.
Aboard the Jolly Roger, Mr. Gold conjures the magic globe and spills his own drop of blood onto it; showing Henry's current location to be in Neverland. After Hook casts the magic bean into the water to open a portal, he, Mary Margaret, David, Emma, Mr. Gold and Regina set sail for the land. ("And Straight On 'Til Morning")
As they sail towards the island of Neverland, Mary Margaret and David approach Emma to comfort her over losing Henry and Neal. Bitterly, Emma blames her parents for their "good always wins" ideology. She rejects the wisdom Mary Margaret wants to share with her and regrets breaking the curse instead of just taking Henry out of town. Emma snaps at them for their unwavering optimism when literally everything has been going wrong since the curse broke. David sees the one good thing that happened was finding Emma as Mary Margaret promises they will rescue Henry. Suddenly, Mr. Gold interrupts to announce his intent of getting him back on his own. He proceeds to list off reasons why Emma will fail in this mission; not believing in her parents, in magic, or even herself. With a spin of his cane, Mr. Gold disappears from the ship. Despite the turn of events, it is smooth sailing until a horde of mermaids begins pounding against the ship. She and Emma work to catch a mermaid on a fishing line, which Regina then hauls up after eliminating the remaining swarm with fire. As they discuss what to do with the sea creature, the mermaid sounds a conch shell and threatens them all with death if they don't free her. Thunder begins brewing in the sky; giving the impression that the mermaid called the storms to arms. At one point, David threatens to cut the mermaid's neck, but a shocked look from Mary Margaret deters him from it. Regina makes the decision to freeze the mermaid to stop the storm, but instead it speeds into a downpour. Mary Margaret and Regina's trade of insults turns into a full on brawl while nearby David and Hook are at it as well. She is so caught up in her animosity towards Regina until seeing Emma deliberately jump into the sea and get knocked out by a fallen rigging rope pulley. As David ties a rope around his waist and dives in to save Emma, Mary Margaret, Hook and Regina team up to pull the both of them up, causing the storm to halt. When they reach the shoreline of Neverland, Emma gives everyone a pep talk by admitting the best thing is to not believe in magic, but in each other. She doesn't expect friendship, but cooperation is necessary to save Henry as well as the handiness of each person's skill. Impressed by her leadership skills, Mary Margaret follows Emma into the jungle. ("The Heart of the Truest Believer")
While the group treads through the jungle upwards to a cliff ridge, Mary Margaret wishes to be closer with Emma and suggests her daughter to call her Mom. Emma is uneasy about the subject, and notes the last time she did, it was because they were all going to die, so Mary Margaret drops the subject. Through one path, they narrowly avoid walking straight into a patch of Dreamshade. Up ahead, the ridge allows them to get a view of the island, but too much has changed since Hook was last in Neverland and he can't tell the difference between anything. They can't comb the jungle, either, because it's not safe to travel through. Mary Margaret reassures they will find Henry, and exemplifies how long it took for herself and David to find Emma, but it was worth the wait. They take a rest for the night, though everyone is awakened with news of Emma's encounter with Pan in the jungle and the map he gave her to find Henry. The catch is Emma must "stop denying who she really is" and only then will the map unlock for her. Regina would rather try using magic on the map, a move Mary Margaret highly disagrees with, as does everyone else. Emma makes the effort to unveil the map by stating facts about herself, with encouragement from her parents, but nothing works. Tired of playing games, Regina snatches the map and casts a locator spell on it, which leads them straight to Pan, who then sends the Lost Boys to engage them in combat. After the battle, Mary Margaret is concerned about an arrow that hit David earlier, but he seems to be fine. Mary Margaret opens up a dialogue with Emma about why she withdrew from the fight earlier on. Reluctantly, Emma admits that the boy had the same look of despair she had while growing up in the foster system as a lost, unimportant girl desperately longing for the parents who gave her up. Emma confesses to being what she's always been, an orphan, causing the map to uncover its contents. Though the truth hurts, Mary Margaret attests that she will do her best to change Emma's future so they can be together as a family. They group form a strategy to travel towards Pan's camp and begin assemble for leaving. ("Lost Girl")
The plan to reach Pan is a failure once when they notice his camp location keeps changing; making their journey fruitless. Hook considers a fairy named Tinker Bell who Pan trusts and can likely get them into the camp with pixie dust. Regina thinks Tinker Bell is bad news and presents Emma with a separate suggestion of combining their powers to take on Pan. Emma refuses since there's always going to be a price of magic. Mary Margaret defends her daughter against Regina's accusation that Hook is Emma's "boyfriend". Regina stays behind to rest while everyone else goes to Tinker Bell's empty and barren tree house. The place reminds Emma of the home she grew up in. Mary Margaret agrees as she once called a tree stump home while on the run from the Queen. Strangely, Tinker Bell's tree house has a ladder, even though fairies have wings for flying. David finds a white cloth, which is Regina's and they rush off to rescue her. They corner Tinker Bell outside a cavern, but an unharmed Regina attests to the fairy's innocence. Regina tells them Tinker Bell lost all her fairy powers a long time ago and can't help infiltrate Pan's camp. Even though she can help them, Tinker Bell wants to know what's in it for herself. Mary Margaret and Emma promise if Tinker Bell helps their cause, she can make a new home in Storybrooke. Tinker Bell agrees and goes back with them to camp. ("Quite a Common Fairy")
At the camp base, Mary Margaret listens to Emma go over the strategy for entering Pan's headquarters from the back after Tinker Bell talks her way in through the front. Before they put the plan into action, Tinker Bell wants to know their escape route off the island, which no one has a clear answer. She stresses that no one ever leaves the island without Pan's permission. To prove a point about how dangerous Pan can be, that came from the people who brought Henry to Neverland, proving Greg and Tamara were killed by him. Tinker Bell weighs the risk as not worthy unless they have a way to leave Neverland and she makes off for her tree house. Emma sees reason in Tinker Bell's words, and recalls what Neal once taught her that it is "unwise to break into a place without knowing the way out." The group talk about how Hook left Neverland, which was through a special one time deal with Pan. The only person Hook can think of who managed to escape on his own is Neal. They set off for a cave Neal once inhabited as a boy, where they find two coconut halves that when combined in the dark, illuminate a star constellation map with an escape route. However, despite that Hook taught Neal how to navigate using the stars, he also coached him that all map makers never reveal their secrets. Emma gathers that the one person able to read it is dead and she stalks outside as her parents follow to console her over losing the man she loved. Instead of being sad, Emma brims with anger over losing him years ago since she spent years thinking Neal didn't love her only to find out the exact opposite, upset that there's not even a chance of letting him know all the hurt and pain he's caused her, and exits to be alone. Mary Margaret is saddened at her own uncertainty of how to comfort Emma, and suggests if David died, she could never move on. David insists if something did happen, he'd want her to be happy. She thanks him for the sweet words and they hug. ("Nasty Habits")
Returning to the cave, everyone searches for something that might be useful. From Emma's observation of Neal's tally marks on the wall, she recognizes he stopped counting the days due to losing hope of ever leaving, which is the same thing Pan wants for Henry. In the hopes of sending Henry a message, Mary Margaret convinces everyone to start making a net to catch a Lost Boy. Since they need more vine material, David heads out to grab more, and hauls Hook along. Hook doesn't budge until Emma presses him, and then bows while saying "as the lady insists", drawing Mary Margaret's curiosity. When the two men return, Hook informs them about a sextant on top of Dead Man's Peak, which can help decipher Neal's map, which he and David will be retrieving. David says goodbye to Mary Margaret and talks to about the unforeseen possibilities in Neverland, though she is sure he will be fine. After finishing the net, they lure a Lost Boy, Devin, into falling into the trap. As Regina tempts the boy with a bar of chocolate, Emma uses Devin's obvious history of loss of family and a home, with the promise of taking him away from Neverland, as reasoning to gain his trust. Devin rejects their offer since he doesn't want to go home, and divulges that the cut on his cheek is Henry's doing. Emma decides to tie Devin to a tree. He shouts about Henry's vicious nature since joining the Lost Boys, infuriating Emma, who starts to choke him, but Mary Margaret pulls her aside. She also blocks Regina from ripping out the boy's heart, but is shocked Emma actually agrees with the method. Mary Margaret is held back by Emma as Regina goes ahead with it. Shortly after, Mary Margaret expresses concerns over what Emma is willing to do to get Henry and what Regina is capable of must stay separate. Regina sends Devin back to camp with one half of a magic viewing mirror to give to Henry. Later, when they look through the other mirror half, a brief conversation takes place with Henry to inform him they are coming to his rescue. They head back to their own camp as Mary Margaret is sorry for doubting Emma's decision to allow Devin's heart to be ripped out as she knows how easy it is to give into darkness. Regina arbitrates that she, not Emma, gave into the darkness. David and Hook arrive back, but without the sextant as Pan got to it first. Nonetheless, David announces that Hook saved his life by protecting him from a Dreamshade arrow after they were ambushed on the way to the peak. They each take a sip of rum, except Regina, until it passes to Emma. Then, she and David go off to be alone. ("Good Form")
Mary Margaret and David anxiously watch Regina school Emma on how to focus her magic to light a fire on some wood. Their daughter and Regina get into a dispute ending with Emma unintentionally channeling her anger and creating a flame on the wood pile. While David thinks it's a bad idea to allow Emma to use magic, Mary Margaret thinks it's necessary that their daughter learns how to use magic and has faith she'll use it wisely. They are approached by Hook, who brings to light Neal is alive, shocking them. Hook details how Pan kidnapped Neal from their campsite to be put in a cave. Mary Margaret catches sight of a snapped branch near the brush as well as footprints resembling a struggle. She plans to tell Emma, but both David and Hook convince her not to. Mary Margaret hates lying to Emma, though David states that sometimes secrets can protect the ones they love. They agree to prep a good cover story in order to search for Neal themselves, which quickly falls apart when David and Hook give different excuses after Emma asks them where they are going. Neither are able to come up with a response to her suspicions, so Mary Margaret blurts out to Emma that Neal is alive. Though Emma is not completely won over by the possibility, Regina cannot stand that everyone is falling for Pan's trickery and leaves the group. As they follow the footprint trail, Mary Margaret learns Emma shared a spontaneous kiss with Hook, though her daughter attests it didn't have any deeper meaning. Though Emma is still on the fence about Neal's alive status, Mary Margaret insists she should have open up to the possibility in order to have her own happy ending. At a cavern known as the Echo Cave, where Hook briefs them on only way to rescue someone inside is for each of them to reveal one of their deepest, guarded secrets. Once inside, they are at a dead end while a caged Neal lies on a separate strip of land in the distance. Hook exposes his secret first, admitting to the kiss he shared with Emma and his feelings for her. Mary Margaret goes next to confirm how unhappy she's been about missing out on Emma's years growing up and her desire to have another child. In tears, David says he would love to give her another child as she'll make a great mother, alas, the price for curing his wound prevents him from ever leaving the island. The truth shocks Mary Margaret, who wordlessly says nothing. A bridge forms for Emma to cross over to Neal and after disclosing her own secret to him, he is freed. When they reach the outside, they decide to regroup with Tinker Bell first and then continue the mission. As they go back to camp, Mary Margaret snaps at David's attempt to talk to her about what he disclosed earlier on. ("Ariel")
Neal familiarizes the group on a tactic for flying off the island using Pan's shadow. Since the Shadow is mostly solitary, they can capture it without going near Pan. Emma steps up on "shadow duty" with Neal as Hook enlists himself as well. They all agree to meet back at Tinker Bell's tree house once the Shadow is nabbed. Mary Margaret stiffly ignores David, which Emma happens to notice. She tries to persuade Mary Margaret that David did not have bad intentions hiding the truth from her, to no avail. Instead, she warns Emma to be careful while travelling with both Hook and Neal as they both harbor feelings for her. As Mary Margaret and David journey to Tinker Bell, he reasons that keeping his secret from her was only fair not to sidetrack everyone. For a moment, Mary Margaret listens, but then disregards what he said and moves on. Near their destination, she continues to be non-responsive when David suggests they can build a home for themselves in the jungle. Frustrated, he yells at her behavior and asks her to at least say something. She stomps back to angrily berate him about lying to her the whole time. David reasons, that at first, he wanted to find a cure on his own so she wouldn't worry. Still, Mary Margaret can't excuse him from leaving her in the dark after finding a cure and expresses anger over her right to know what the cost for it is. David sputters for an answer until blurting out that he was scared knowing she would be unwilling to leave the island without him, and did not want to force the cure's price on her. Yet, Mary Margaret attests that's exactly what she would do in order to be with him. He apologizes for disappointing her and they reconcile with a hug. They wait for Tinker Bell outside her home. When she shows up, they inform her about nabbing Pan's shadow as a way off the island. She doesn't believe them until Emma, Hook and Neal straggle out of the wilderness with proof and then leads them to the next part of the plan. ("Dark Hollow")
While moving ahead to Pan's camp, Emma is relieved to see her parents have made up and talks to Mary Margaret about her decision to stay behind in Neverland with David. Though Mary Margaret is torn about leaving Emma, there's no way for David to leave without dying. Emma accuses her of giving up too easily and believes there has to be a way. A rustle from the jungle causes the entire group to assemble for battle, but it turns out to be only Regina and Mr. Gold. Regina tells them about the power of Pandora's Box while Neal's distrust in his father causes him to blurt out Mr. Gold's objective to kill Henry and prevent a seer's prophecy from coming true. Disgusted, Mary Margaret aims an arrow at Mr. Gold as the others subsequently follow suit in drawing their weapons. Things cool down only when Neal forces him to hand over the box. After Tinker Bell gains access into the perimeter of the encampment, Regina uses a spell to put all the Lost Boys to sleep, however, neither Henry or Pan are found. Instead, Neal frees a young prisoner, Wendy, and brings her back to camp to inquire about Henry. Forced to act on Pan's wishes, Wendy lies to them, but with some encouragement, she yields and tells the truth. Mary Margaret gains insight on Pan's real reason for needing Henry's heart, which is to save himself from dying and then become immortal. As a trade, Pan lives, but Henry will die. Before Emma leaves for Skull Rock to stop Pan, she presses Mary Margaret and David to go back to Dead Man's Peak and retrieve more of the spring water as a necessity for the journey home. While the water can keep David alive for a span of time, Mr. Gold will create an elixir in Storybrooke to cure him for good. Grateful, Mary Margaret hugs Emma and thanks Mr. Gold. ("Think Lovely Thoughts")
Mary Margaret and David return to the Lost Boy camp and learn from Emma that Henry gave up his heart to Pan and Mr. Gold is trapped inside Pandora's Box. Regina casts a preservation spell on Henry to last one hour until they can track down Pan. Emma manages to get some of the Lost Boys to open up about Pan's current location at his "thinking tree" in Pixie Woods after promising to bring them off the island. Mary Margaret insists on going along with Emma and Regina. Once there, she sees the box sitting in open sight and moves to take it, but this pulls all three of them in binds against the tree as Pan makes himself known. Pan mentions the tree is special to him because it's the same place that he abandoned his son, Mr. Gold. As such, the tree will kill those who feel regret, so he brings up guilt-worthy moments from each person's past. To Mary Margaret, he grills her over being haunted by the decision to allow Emma to grow up alone. However, Regina attests to doing cruel and horrible things, but regrets nothing since each one of those deeds led her to Henry. She breaks herself and her allies free, tears out Henry's heart from Pan and steals back the box as well. They hurry onto the Jolly Roger in time to place the heart back in Henry as he gasps to life. Mary Margaret and David watch Neal free Mr. Gold from the box and have a warm reunion as their past differences and mistakes are reconciled. With Regina's power, the Shadow becomes the ship sail and flies them homeward. ("Save Henry")
Following a safe journey out of Neverland to Storybrooke, Mary Margaret descends the ship to greet an old friend, Ariel, and is ecstatic to see Eric is with her, too. As everyone is welcomed back, Mary Margaret, realizing a certain someone deserves recognition, announces to the townspeople that they were able to come back due to Regina's helpful efforts. To keep Pan at bay, Mr. Gold seals the box away in the pawnshop. While spending some relaxing time at the diner, Mary Margaret and David overhear Neal inviting Emma to lunch tomorrow. Mary Margaret firmly believes Emma owes it to herself to accept Neal's offer. However, Emma is unwilling to think about herself when she can't forget about Henry's ordeal. Later, Mary Margaret notices Henry requests to go home with Regina and puts Emma's mind to rest by stating that he likely just wants to spend the night in his old room. The next morning, she and David dine on lasagna when Mr. Gold drops by with an elixir to cure the Dreamshade wound. After David ingests it and all is well, he suggests they start trying to have another child, but Mary Margaret's mood dampers when she observes that Neal is sitting alone at another booth, meaning Emma didn't show up. David goes to have a pep talk with Emma. Another problem arises in town when Mother Superior is killed by the Shadow as everyone begins to suspect Pan is behind it. Mary Margaret goes with Emma and David to procure the box from Mr. Gold. Next, they go to the town line where Emma crosses over as Pan is released from the box on the same side. Pan claims to be Henry, and proves it by telling Emma something only the boy himself would know. They all regroup with Hook, Neal and Tinker Bell at the vault where Regina took "Henry" for protection. As Mr. Gold works to unlock the vault, Mary Margaret and David open Emma up to moving on with life and not worrying about things so much, but their daughter is finding it difficult to be a savior and have a day off from trouble. Inside the vault, Regina is found unconscious while one critical item is missing and now in Pan's hands—the Dark Curse. ("The New Neverland")
Mr. Gold shares with everyone of the only viable way to stop Pan's curse is for Regina, as the original caster of the Dark Curse, to undo it by destroying the scroll, though there will be a steep price for this. They plan to switch Henry back to his own body so he will be in possession of the scroll and bring it to Regina. Mr. Gold can perform the spell, but needs a strong outlet in order for it to work. Tinker Bell has knowledge of a powerful Black Fairy wand that Mother Superior kept, so she, David, Hook and Neal go to retrieve it from the convent nuns. While waiting in the pawnshop, Mary Margaret sees the unicorn mobile that would have been used for Emma's infant crib. She relates to Emma how difficult it was to give her up when the curse hit, and her constant struggles about the different life they could've had if that path wasn't taken. Emma, too, thinks about the same with Henry, and mulls over what could have been, but realizes it wasn't meant to be. David, Hook and Neal arrive back with the wand, courtesy of a restored Mother Superior, and Mr. Gold uses it to transfer Henry's spirit back into his original body. Everyone except Mr. Gold heads out, and with Granny's tracking skills, they are reunited with Henry. Regina passes out after taking the scroll and awakens with knowledge of the price for stopping the curse. They are accosted by Pan as he steals back the scroll and freezes them in place. The showdown ends when Mr. Gold summons the dagger and stabs Pan as well as himself with it; killing both of them. After this, Regina admits the price is all former Enchanted Forest inhabitants will be sent back to their old world while Storybrooke will disappear out of existence. To keep Henry from being alone, Emma will leave town with him and Regina rewrites new memories for both of them so they forget everything. Before this, Mary Margaret says goodbye to her daughter and grandson. As the two cross out of Storybrooke, Regina stops the curse from taking over as everyone inside the town is sent back to the Enchanted Forest. ("Going Home")