Frozen is a 2013 American 3D computer-animated musical fantasy film produced by Walt Disney Animation Studios and released by Walt Disney Pictures. It is based on "The Snow Queen" by Hans Christian Andersen. The film tells the story of Anna, a fearless optimist who goes on a quest to find her sister Elsa, whose icy powers have trapped the kingdom of Arendelle in eternal winter. Together with ice harvester Kristoff, his reindeer Sven, and snowman Olaf, Anna tries to undo the magical winter that Elsa has cast and learn that love is the most powerful magic of all.