Spoilers ahead for Frozen II. Thematically, Frozen II has a really interesting subtext about what we owe to other people based on the sins of past generations. In the movie, we learn that an alliance between Arendelle and the Northuldra was violated when Elsa and Anna’s grandfather, the former king, tricked the Northuldra into using a dam and then killed their leader without provocation. This attempt at conquest was thwarted when the spirits of the forest trapped everyone inside with a magical mist. It became a piece of forgotten history until Elsa works to uncover what really happened. In …