Elsa finds herself in Storybrooke scared and, fearful of the intentions of its residents. She creates a powerful snow monster for protection. Meanwhile, in Arendelle in the past, Elsa's sister Anna's wedding to Kristoff nears. Anna discovers that their parents were heading to a mysterious destination in a quest that may have held the secret to containing Elsa's Ice powers. Against Elsa's wishes, Anna wants to finish their journey to find out what they were looking for.
—Christopher Ebert