Complete story — includes the ending
As everyone attempts to track down Ingrid, Emma discovers that there is more to her connection than she expected, while Belle begins to recall her past encounter with Anna and forces Gold into leading her to Ingrid's lair. After Belle sees the mirror, Gold warns Ingrid that he will stop her from harming anyone close to him, and shows her the Sorcerer's Hat as proof. Belle reveals that Ingrid is planning to destroy everyone around Storybrooke by using a mirror in order to bring the only family into her world: her, Elsa, and Emma, who discovered a prophecy scroll that she is the savior that will become Ingrid’s sister. In the Enchanted Forest and Arendelle of the past, Belle seeks out help in finding out a way to remember her mother's death with the help of Anna, who is trying to keep Elsa from finding out the truth about her trip, until she becomes suspicious of Ingrid's presence. Anna discovers that Ingrid is hiding the truth about having another sister, causing Ingrid to imprison her and steal the box that contains the Sorcerer's hat.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Once Upon a Time season 4. HTML formatting and reference markers removed. · Content license