Hook and Cora arrive at Storybrooke and plan their revenge while Regina struggles to regain the trust of the rest of the town. Matters worsen when a beloved resident is killed and Regina takes the blame. Back in the fairy tale world, Snow and Charming disagree over how to handle Regina now that they have taken over the kingdom.
Mr. Gold finds a way to cross the town boundary without losing his memory but his efforts are ruined by Hook, forcing Belle to try and save his plans. Back in the fairy tale land, Belle seeks adventure by trying to destroy a monster that plagues the town. Along the way, she meets and befriends Mulan.
Minutes after the accident, Emma, Mary Margaret, David and some of the other town members try desperately to keep the true nature of their town secret from the newly arrived stranger. While they seek out the disappearing Dr.Wale, Mr.Gold tries desperately to recover Belle's memory. Back in fairy tale land, Dr. Frankenstein embarks on his greatest experiment.
Mr. Gold and Emma, accompanied by Henry, depart on their journey. Back in Storybrooke, Mary Margaret, David, and Leroy stumble upon Anton, the giant, who is out to murder David. Back in fairy tale land, the giant Anton visits the humans of his world and runs into Prince James and "Jack".
While Emma, Gold, and Henry chase after Baelfire, Regina, Cora, and Hook search the town for Rumpelstiltskin's sword in an attempt to destroy his power. Back in fairy tale land, a valiant Rumpelstiltskin is called to war but encounters dark forces along the way.
In the fairy tale world, Snow White's birthday ball is put on hold when her mother, Queen Eva, is taken ill. Back in Storybrooke, Hook, Cora, and Regina set out in search of Rumpelstiltskin's dagger. Mary Margaret reconnects with Johanna.
In the fairy tale world, Cora, the miller's daughter, seeks revenge against the royal family after they degrade her in public. Back in Storybrooke, as Cora and Regina continue their quest to find Rumpel's dagger, Emma, Neal, David, and Mary Margaret protect Gold and prepare for battle.
Emma and David enlist Gold's help to protect Mary Margaret from a vengeful Regina while Henry searches for a way to destroy magic in Storybrooke. Meanwhile, back when the spell was originally cast, Regina seeks the company of a father and son who stumble into Storybrooke.
Mary Margaret begins to deal with her guilt concerning the death of Cora while Neal's fiancée arrives in Storybrooke. Meanwhile, back in Phuket, August seeks the help of a healer known as the "dragon" when he starts to turn into wood.
Wrestling with the threat of the prophecy, Gold attempts to bring back Belle's memories by spending more time with her. Flashbacks to the fairytale world show Belle just after she was imprisoned by Rumpel. Meanwhile, Mary Margaret and David reveal a secret project they have been working on to Emma.
When she finds out that David and Mary Margaret plan to return to the Enchanted Forest, Regina searches for the fail-safe key that will destroy Storybrooke. In the fairy-tale world, Queen Regina continues her search for the bandit Snow White. Emma begins to suspect Tamara's motives.
When Regina goes missing, Emma immediately suspects Tamara. After Bae leaves the magical world, he lands in London, England and stumbles upon the Darling house where he meets Wendy and her brothers. Meanwhile, Gold shows Lacey his magical powers.
As Greg and Tamara set out to destroy Storybrooke, Regina tries to delay the destruction so that the rest of the town can escape. Meanwhile, Hook takes Bae on as a crew member on his ship, ignoring Smee's advice to use Bae to exact revenge.
Tensions arise as Hook's ship sets sail to Neverland to search for a kidnapped Henry, while Neal travels through the Enchanted Forest with Mulan. Meanwhile, Henry finds himself on the run from the Lost Boys after Greg and Tamara are ambushed.
In Neverland, Peter Pan gives Emma a map that will reveal Henry's whereabouts as soon as she accepts her true identity, while Gold receives some unexpected advice. Back in fairy tale land, the Evil Queen presents Snow with an offer, which Charming does not want her to take.
Hook suggests tracking down Tinker Bell to help locate Pan's hideout, while Neal devises a plan in order to get to Neverland. Meanwhile, back in fairy tale land, Tinker Bell offers to help improve Regina's life.
Gold confronts Pan, while Neal finds himself back in Neverland. Back in fairy tale land, Rumplestiltskin goes in search of a missing Baelfire, who has followed a mysterious figure who steals away children with his music.
Hook tries to help save David's life as the deadly dreamshade takes it's effect. Back in fairy tale land, Killian Jones and his brother, Captain Liam, sail under orders of the King to find a powerful indigenous plant on an uncharted land that could help heal any injury.
As Henry's life hangs in the balance, the race is on to stop Pan from gaining full power from the heart of the truest believer. Back in Storybrooke of the past, Regina decides to fill a void in her life and sets out to adopt a baby.
As Hook's ship returns to Storybrooke, a well-hidden Pan puts a new plan into motion. Back in fairy tale land, Snow and Charming go in search of a mythical being that could stop Regina cold in her tracks.