Though the series creators have said that this storyline isn't like having a Frozen sequel, it does appear that we'll have at least one answer about the original story. In the movie, when Elsa and Anna's parents perish at sea, we don't know where they're going, but Once Upon a Time is filling in that blank. In a flashback in Arendelle, Elsa finds a book of her mother's that reveals she and her husband were concerned about Elsa's condition. Though Elsa assumes the worst, we presume they were headed to find a cure, and Pabbie spills the beans that they'd been asking about Mist Haven, aka the Enchanted Forest. But will the show really reveal something earth-shattering about Frozen's foundation?
