In New York, Hook tries to get Emma to remember who she really is. In the past, the Storybrooke residents return to the Enchanted Forest and are threatened by a threat like no other.
The residents of Storybrooke race to stop Pan from placing another curse on the town.
Pan’s plan threatens the citizens of Storybrooke’s joy over Henry’s return; Snow and Charming spend their honeymoon searching for a mythical being that could stop Regina.
The race to stop Pan is on as Henry’s life hangs in the balance; with Mr. Gold’s help, Regina decides to adopt a baby.
Pan leads Henry to a secret cave, where he has convinced the boy that he alone can save magic – and Neverland itself. But a showdown between good and evil is about to go down as Emma, Mary Margaret, David, Regina, Mr. Gold, and Hook find themselves directly on a path to Pan in an effort to save Henry.
Mr. Gold and Regina send Ariel back to Storybrooke with an item that will allow Belle to locate a hidden artifact that could help take down Pan. But unbeknownst to them, two men have broken into the town with the intent to stop them – at all costs. Meanwhile, Emma, Neal and Hook attempt to find Dark Hollow, where Peter Pan’s shadow dwells, in order to capture it, and Mary Margaret is upset with David for keeping his poisoning a secret from her.
Back in the Fairy Tale Land that was, when Ariel saves Snow White from drowning in the ocean’s depths, Snow returns the favor by helping her new friend get acquainted with Prince Eric, with whom she has fallen madly in love with. Meanwhile, Emma, Mary Margaret, David and Hook attempt to save Neal, who is imprisoned in one of Pan’s encampments, and Regina and Mr. Gold begrudgingly team up to find a way to take down Pan.
With the deadly Dreamshade coursing through David’s body and close to death, Hook takes him on one last journey to find a sextant that could help them decipher a map that would lead them off Neverland. Meanwhile, in the Fairy Tale Land that was, Killian Jones – aka Hook – and his brother, Captain Liam, sail off under orders of the King to find a powerful indigenous plant on an uncharted land that could help heal any injury.
Mr. Gold makes a decision to confront Pan, but will he go there to save Henry or give in to the prophecy that the boy will be his undoing? Neal finds himself back in Neverland and in the custody of one of Pan’s most loyal Lost Boys. And David struggles for his life as the poison continues to take its toll on him. Meanwhile, in the Fairy Tale Land that was, Rumplestiltskin goes in search of a missing Bae, who has followed a mysterious figure who steals away children with his music.
In their continuing quest to find Peter Pan’s hideout and save Henry, Hook suggests tracking down Tinker Bell in the hope that she will lead them straight to his camp. Pan reveals to Henry why he has brought him to Neverland and in the Enchanted Forest, Neal has a plan that could transport him to Emma, but it would involve using one of Robin Hood’s most precious possessions. Meanwhile, in the Fairy Tale Land that was, Tinker Bell offers to help Regina improve her life.