Emma tries to help a young pregnant woman escape from the clutches of Mr. Gold. Meanwhile, back in the fairytale world that was, Cinderella makes a regrettable deal with Rumplestiltskin.

Feeling their pain from having lived through the same experience, Emma desperately tries to help two homeless children find their birth father before they’re separated and put into the foster care system. Meanwhile, back in the fairytale world that was, the Evil Queen coerces Hansel and Gretel into stealing an important artifact from a blind witch.

With their love for each other growing stronger, David finally agrees to tell Kathryn about his relationship with Mary Margaret and put an end to his loveless marriage. Meanwhile, in the fairytale land that was, while runaway groom Prince Charming searches for Snow White, he agrees to aid Abigail on a dangerous mission to recover something precious that was lost to her.

While searching for a missing Mary Margaret, Emma is kidnapped by a man whose affinity for hats has him teetering on the edge of madness. Meanwhile, viewers will be transported outside of the fairytale land that was for the first time when the Evil Queen persuades a skillful man of magic to come work for her one last time and travel to Wonderland in order to help steal something from the Queen of Hearts.

Henry pleads with Emma to stay in Storybrooke and continue her quest as the savior of the fairytale dwellers, and Regina concocts a plan that could rid her of Emma forever. Meanwhile, back in the fairytale land that was, Snow White enlists the aid of her fellow fairytale cohorts to attack the Evil Queen and save Prince Charming's life.

Belle threatens to leave Mr. Gold if he doesn't change his ways; the dwarves try to find fairy dust in the Storybrooke mine; Rumplestilskin tries to save his wife from a band of pirates.

When Regina is accused of murdering a beloved fairy-tale character, Emma thinks she is innocent; Prince Charming and Snow White plan the evil queen's execution.

When Mary Margaret learns of Cora and Regina's plan for the dagger, she resolves to find it first; Mr. Gold continues his search for Bae; the Blue Fairy offers Snow White an enchantment to save her mother.

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.

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.

Ariel returns to Storybrooke and pleads with Hook to help her find Prince Eric, who never returned to the town when the new curse was invoked. Emma agrees to let Regina teach her how to use magic so that she can help defeat Zelena, and Mary Margaret and David try to prove that they can be just as much fun as Hook is with Henry -- who thinks they are boring. Meanwhile, in Fairy Tale Land during the past year, an angry Ariel confronts Hook over her missing Prince Eric, who she assumes was kidnapped and possibly killed by the swarthy pirate. But when Hook confesses that the Jolly Roger has been stolen and Eric is most likely the thief’s prisoner, Ariel unknowingly provides him with a clue as to who the culprit is, and Hook – with Ariel in tow - goes off in search of his ship.

While Mary Margaret and David celebrate the naming of their son at a coronation in Granny's Diner, Emma and Hook are pulled into Zelena's time portal and find themselves in the Enchanted Forest of the past. But in their quest to discover a way back, they must be careful not to change anything or risk altering the lives of their friends and family - as well as their very own existence.

Marian falls under a freezing curse and the townspeople believe that Elsa is responsible. When Emma and David go to Robin's camp to look for clues, they find Will Scarlet, who leads them to the culprit. Meanwhile, in the Arendelle of the past, Elsa and Kristoff go to find the urn that Hans plans to use to imprison Elsa, and encounter the Snow Queen.

Emma’s powers run amok and she turns to Gold for help, Elsa and Anna’s relationship is tested, and the Snow Queen’s agenda is revealed.

Emma’s powers run amok and she turns to Gold for help, Elsa and Anna’s relationship is tested, and the Snow Queen’s agenda is revealed.

In order to infiltrate the Queens of Darkness as a spy for the heroes, Regina must prove she’s still willing to get her hands dirty. Meanwhile, Emma, David and Mary Margaret scramble to keep tabs on their undercover operative. Hook requests an unusual favor from Belle as Henry makes progress on his search for the Author. In a Fairy Tale Land flashback, Regina befriends Maleficent and helps her to rekindle her lost spark.

In fictional 1920s England, viewers meet a young Cruella, whose oppressive mother uses her Dalmatians to terrorize her daughter. Cruella is confined to her mother’s attic until a mysterious stranger arrives and empowers her to challenge her captor. In Storybrooke, Regina gains leverage to keep Gold from interfering with her plan to rescue Robin, but her trip to New York takes the backseat when she and Emma learn that Cruella has kidnapped Henry.

After receiving a cryptic warning from Lancelot about Arthur's intentions, Mary Margaret realizes Arthur may be the heroes' biggest threat, but when she is unable to convince David of the danger, she takes matters into her own hands. Meanwhile, Hook's unwavering love for Emma provides a glimmer of hope in her struggle against the unrelenting voice of Rumplestiltskin. In a Camelot flashback, Guinevere senses that Arthur is losing his way, consumed by his obsession with making Excalibur whole, so she sets out with Lancelot on her own quest into the heart of darkness. In Storybrooke, Dark Emma unleashes a secret weapon in the next phase of her plan to find the brave soul she needs to draw Excalibur from the stone.

Tensions in Camelot come to a head when Merlin, now under Arthur’s control, delivers an ultimatum to Emma: hand over the Dark One dagger and the Promethean spark or he will kill her entire family. Refusing to give in, Emma and our heroes face off against Arthur, Merlin and Zelena in an epic battle of magic and will. Just when the end is in sight, Emma is forced to make a gut-wrenching choice that no one saw coming. Back in Storybrooke, Zelena’s pregnancy mysteriously accelerates and Hook goes to new and desperate lengths to get answers from the Dark Swan.

Regina reels from the death of Robin Hood, and everyone tries to give her room to grieve, but when the heroes discover Gold has stolen Hades’ Olympian Crystal and tethered all of Storybrooke’s magic to it, they set out to stop him. Henry decides he no longer can stand all the pain magic has caused his family, so he goes rogue, with Violet in tow, to destroy magic once and for all. Meanwhile, Zelena, Snow, David, and Hook attempt to open a portal that will return Merida and the other Storybrooke guests to their homes, but things go awry, and the group winds up in a deranged new world.

Cinderella joins forces with a new friend; Jacinda tries to protect Lucy's community garden; Lucy tries to convince Henry that Victoria is after more than just a plot of land; Victoria makes a discovery that could alter everyone's fate.

As the residents of Hyperion Heights celebrate the breaking of the curse, Henry is visited by Wish Rumple, who’s hatched an evil plan to use Ella and Lucy to keep Weaver from destroying the Dark One powers. In order to stop him, Henry, Roni, Weaver and Rogers must travel to the Wish Realm, home to versions of some of our most beloved and fearsome characters. In a flashback, a discouraged Young Henry is visited by Wish Rumple and offered a deal that could have tragic consequences.