Determined to find her sister, Elsa created a barrier that would prevent anyone from Storybrooke from leaving town until they're together. Elsa may have controlled her magic before, but without her sister, can she stop someone else from freezing to death? In the Enchanted Forest, however, Anna seeks help from a shepherd and in return, she teaches him to sword-fight against a brutal warlord from an impossible battle who is threatening his and his mother's farm if they don't pay her price.