There is a town in Maine where every story book character you've ever known is trapped between two worlds, victims of a powerful curse. Only one knows the truth and only one can break the spell.
Emma Swan is a 28-year-old bail bonds collector who has been supporting herself since she was abandoned as a baby. Things change for her when her son Henry, whom she abandoned years ago, finds her and asks for her help explaining that she is from a different world where she is Snow White's missing daughter.
When she learns the heroes possess a weapon capable of defeating her, the Evil Queen steals Aladdin’s magic lamp from Jasmine and makes a wish that could sideline the Savior forever. Unwilling to wake Snow while Emma is missing, David works with Hook and Henry to hold the Evil Queen at bay in Storybrooke.
Zelena decides to take on the Black Fairy and put a stop to her, once and for all, against Regina’s wishes, and the Charmings disagree over Emma and Hook’s wedding plans.
Tana seeks help from a traveling soothsayer, the iconic Dr. Facilier, in an attempt to save her kingdom. But when it’s revealed that he has an ulterior motive she’s forced to take matters into her own hands. In Hyperion Heights, Sabine and Jacinda take on a risky business venture, but the strength of their friendship is tested when Victoria interferes with their plans. Meanwhile, Ivy recruits Henry to investigate Victoria, and Roni makes a discovery that could change her relationship with Henry forever. Rogers uncovers a crucial clue in his search for Eloise Gardener.
When Gideon resumes his mission to kill Emma and become the Savior, Gold steps in to ensure that the use of dark magic does not poison his son. Meanwhile, Robin proves willing to ally himself with anyone offering the possibility of escape from Regina and Storybrooke. Hook gathers the courage to come clean to Emma, but not before she discovers he’s been keeping a secret.
Henry wakes up in a strangely changed Storybrooke where Emma is a mental patient and the rest of his family has disappeared.
Believing there isn’t room in Storybrooke for both her and Regina, the Evil Queen sets out to eliminate her other half. Hook, determined to make things work with Emma, turns to his old friend Captain Nemo for advice, but Gideon torpedoes the plan before he’s able to set things right.
Gold and Belle convince Emma to help Gideon, explaining that together they can stop the Black Fairy. Henry experiences a disorienting shift in his powers that forces Regina to seek counsel from the previous Author. Meanwhile, in Fairy Tale Land, Hook attempts to win the assistance of an old adversary by betting his most prized possession on a game of cards. And, in a flashback, the Black Fairy tortures young Gideon in hopes of molding him into the perfect apprentice.
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.
Henry’s Storybrooke family help him search for Cinderella, and Hook encounters an unexpected foe who threatens the group’s success. Meanwhile, in Hyperion Heights, Jacinda searches for a way to see Lucy with some unwelcome assistance from Henry.
After Rumple’s mother learns from his fairy godmother that his destiny is prophesized, she does everything in her power to keep it from happening. Meanwhile, in Storybrooke, Rumple faces a similar delimma.
Gold tells the Evil Queen she must kill Zelena, and the Queen makes a decision that will change her relationship with her sister forever. When Belle discovers Gold’s plans for their son, she convinces Hook and Emma to help her steal squid ink that can immobilize him. Meanwhile, Jasmine finds a genie-less lamp that she hopes to use to save Agrabah.
Henry leaves Storybrooke in search of his own story. Years later in another realm, he encounters a troubled Cinderella, changing the trajectory of his quest forever. When Cinderella’s evil step-mother, Lady Tremaine, poses a threat, Henry discovers that following his heart will require him to make more difficult choices than he ever could have imagined. Years later, a young Lucy finds a disillusioned Henry at his home in Seattle, determined to make him remember his true self in order to defeat the curse afflicting the fairytale characters of “Hyperion Heights.”
In flashback, Snow and Charming make a special wish that Emma will be protected. The result of their wish has the whole kingdom bursting into song which infuriates the Evil Queen. Meanwhile in Storybrooke, the Black Fairy announces her plans to unleash another curse on the town while Emma and Hook prepare for their wedding.
Trapped in Neverland, Hook aligns himself with Tiger Lily, hoping to find a way back to Emma. In Storybrooke, Regina works to break the sleeping curse that David and Snow are under, and Gold denies The Black Fairy, which brings the two of them to a fearsome impasse.
When Hook finds himself trapped in another realm along with the Nautilus and her crew, he races to return to Emma before Gideon can execute the rest of his plan. In Storybrooke, Regina and Snow take Emma out to get her mind off Hook’s disappearance. And in a flashback to Agrabah, Jasmine befriends Ariel, and together they set out to locate Prince Eric as the threat from Jafar intensifies.
Emma regains her memory but discovers that the Black Fairy has set the perfect trap for her. Meanwhile, the Evil Queen makes the ultimate sacrifice to save her former kingdom, and Gold is forced to choose between Good and Evil.
With Snow still asleep in Storybrooke, David and Hook race to stop Gideon before he can confront Emma. Meanwhile, Regina struggles with the realization that everyone, even Robin, is better off in the alternate world where the Evil Queen was defeated. And when Emma inspires a familiar face to help her and Regina return home, she discovers the power to change her fate.
Before Hook takes the next step in his relationship with Emma, he wants to make sure David sees him as more than just a pirate. When David asks Hook to help him uncover the truth about his father’s death, Hook agrees. Meanwhile, Regina works to acclimate Robin to life in Storybrooke, but soon discovers he has a dark side that makes the task much more complicated than she anticipated.
It’s Halloween in Hyperion Heights and Victoria forces Ivy to take Lucy trick-or-treating. Meanwhile, Tilly appears to be waking up from the curse and is intent on leading Weaver to the truth – but not if Victoria can help it. In a flashback, Rumple and Belle seek the answer to a prophecy that could cement their happy ending.
Emma and Regina formulate a plan to trap the Evil Queen in a prison of their own making, while Snow and David adjust to life without each other. Meanwhile, Zelena agrees to help Belle, and together they enlist Aladdin to steal a magical object from Mr. Gold that could protect Belle and her unborn child from him forever.
