In Borneo, at the edge of the tropical forest, Kéria is given a baby orangutan that has been rescued from the oil palm plantation where her father works. At the same time, her young cousin Selaï has come to live with them, seeking refuge from the conflict between his nomadic family and the logging companies. With their ancestral forest home under greater threat than ever before, Keria, Selaï and the little ape, now named Oshi, will have to confront many obstacles in their battle against its planned destruction.