David - aka John Doe - must choose between staying with Kathryn or leaving her to be with Mary Margaret, with whom he's fallen deeply, and inexplicably, in love; and Emma catches Sheriff Graham in a lie. Meanwhile, back in the fairytale world that was, Prince Charming is about to encounter a life-changing event that will forever alter his destiny.

Mary Margaret and David continue to grapple with their unrequited love, and Emma and Regina grow suspicious over a mysterious new stranger in town. Meanwhile, in the fairytale land that was, Snow White yearns to ease her breaking heart as Prince Charming’s wedding to King Midas’s daughter approaches.

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.

Emma continues her exhaustive search for evidence that will prove Mary Margaret's innocence in the murder of David's wife, Kathryn. Meanwhile, in the fairytale land that was and before evil blackened her soul, Regina must choose between betraying her mother, Cora, and marrying for true love, or betrothing royalty and living a regal - but loveless - life; and the event that caused the Evil Queen to loathe Snow White is revealed.

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.

Emma and Mary Margaret try to find a portal that would bring them back to Storybrooke; Henry tries to talk Jefferson into reuniting with his daughter; on the eve of meeting Prince Charming's mother, King George poisons Snow White.

Ruby's fear about turning into a wolf is confirmed when she becomes the prime suspect for a vicious murder; Leroy finds treasure in a Storybrooke mine that could help Emma and Mary Margaret.

Cora brings the giant to Storybrooke, where he unleashes vengeance on the town; Emma and Henry go with Mr. Gold to search for his son; Greg asks Belle what she saw on the night of his accident; Anton the Giant befriends humans.

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.