After Emma breaks the Dark Curse and magic arrives in Storybrooke, Marco puts up missing posters; believing his son to be lost and still a child. While the townspeople are still recovering from the recent Wraith attack, they receive word from Leroy and the dwarves that anyone who attempts to cross the town line will lose their Enchanted Forest memories. The news causes a huge stir, but David sets up a town meeting in two hours' time and promises to come up with a plan. At the town hall, residents anxiously await David's arrival. Instead, Regina arrives to demonstrate her newly restored magic powers to them until Henry agrees to go home with her. With no sign of David, the townspeople decide they would rather lose their memories by leaving town than deal with Regina. Marco is one of the many who attempt to drive out of town, but David puts a stop to it with a heartfelt speech. He convinces them to accept both their Enchanted Forest and Storybrooke selves by drawing strengths from their weaknesses. Moved, they all return home. Later, Marco receives news of his son's whereabouts from Henry, however, he visits August's room at the inn only to discover it empty. ("We Are Both")
The death of Archie is announced to the rest of the townspeople after Emma seemingly finds incriminating evidence via the dream catcher of Regina as the murder. Marco attends the funeral to listen to Mary Margaret give a eulogy dedicated to Archie. After she is finished, Marco gives his own personal farewell to his dear friend. Following this, Marco, Bashful, Doc, Dopey, Happy, Leroy, Walter, Mother Superior, Ruby and Granny spend time in Mary Margaret's apartment for a luncheon. Leroy approaches Emma and Mary Margaret to ask, on behalf of himself and other dwarves, when they will be returning to the Enchanted Forest, which perks everyone else's attention to the conversation. He is concerned about Regina being on the loose, but also about the possibility outsiders can wander into town now that the curse is lifted. Emma believes they are safe for now while Leroy believes that trouble will happen sooner or later. To help cheer up a depressed Henry, who is taking Archie's death badly, Marco has a talk with Emma and relinquishes ownership of Pongo to the boy. ("The Outsider")
While at the diner, Marco overhears Mary Margaret tell Emma that she found a still wooden August living in an abandoned trailer near the Toll Bridge. Wishing to see his son again, he tags along with the two women to seek out Mother Superior's help. Disappointingly, Mother Superior admits she's known about August's dilemma since the breaking the curse, but cannot change him back since he did not remain brave, truthful and unselfish. She states if August wants to redeem myself, he must do it himself. On the way to the abandoned trailer, Marco, believing August's current situation is his fault, guiltily admits how he, out of desperation for his son's safety, struck a deal with the Blue Fairy to allow Pinocchio to be one of the two people to be saved from the curse. He confesses that the magic wardrobe was capable of transporting two people to safety, but the Blue Fairy lied and stated only one could be saved. Wrought with anger, Mary Margaret slaps Marco. She apologizes for her action and even forgives him, but Marco still feels too guilty about the burden he put on his son by putting him through the wardrobe.
By accident, Mary Margaret stumbles upon an abandoned trailer near the Toll Bridge with August hiding inside. He is too ashamed to let anyone see him while still completely wooden and asks her to leave him alone. Instead, she informs Emma and Marco about August's dilemma. Together, they head off to get help from Mother Superior.
Outside the convent nunnery, Mother Superior admits to knowing the situation August is stuck in since the breaking of the curse when he came to ask her to change him back, which she could not because he did not remain brave, truthful and unselfish. 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. But, Marco does not believe the burden of duty he put on his own son was the right choice. They finally reach the trailer, but August is not inside. While heading back, Emma picks up a call from August when the line is cut off. Joined by David and Henry, they all go to the sheriff department in time to witness August stumbling out and collapsing as Emma and Marco attempt to help him, but he passes away shortly after. Henry is struck by the idea that August can get a second chance if his actions proved himself to be selfless, brave and true. Mother Superior rushes over in agreeance and successfully uses her wand to revert August into a seven-year-old Pinocchio. Reunited, Marco takes his son home. ("Selfless, Brave and True")
The devious Pan infiltrates Storybrooke by previously switching bodies with Henry and sets out to cast his own version of the Dark Curse. Regina puts a stop to it by undoing the curse she cast, but also getting rid of Pan's curse in the process. As a price, Storybrooke will be wiped out and all residents will have to return to the Enchanted Forest. Once Regina's task is done, everyone except Emma and Henry, who left town on the mayor's request, is engulfed by the curse's purple smoke. ("Going Home")