In Borneo, near the tropical forest, Kéria rescues a baby orangutang in the palm oil plantation where her father works. Kéria's cousin Selaï comes to live with them seeking refuge from the conflict between his indigenous tribe and the logging companies. Kéria, Selaï and the little orangutang, now named Oshi, will have to fight against their forest’s destruction.
An army of bear cubs train and indoctrinate young recruits for the war against the unicorns, which threatens the safety of the cubs. Brothers Bluet 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.