Teenagers Birdboy and Dinki have decided to escape from an island devastated by ecological catastrophe: Birdboy by shutting himself off from the world, Dinki by setting out on a dangerous voyage in the hope that Birdboy will accompany her.

An army of bear cubs train and indoctrinate young recruits for the war against the unicorns, which threatens the safety of the cubs. Brothers Bluey and Tubby, along with a group of inexperienced cadets, are sent on a dangerous mission to save the Magic Forest, where the unicorns live, and start a terrible battle.