Elsa is based on the main character of the story The Snow Queen. In the movie, Elsa is born with ice powers and hurts her sister Anna, causing her parents to lock her up in her room for her young life. Elsa's parents die, and Elsa becomes the queen, but escapes to finally have freedom for herself and avoid hurting people with her ice powers. When Elsa accidentally freezes the kingdom, she flees to a far-off mountain. Anna goes after her sister.