Mu, the creature with the sweet and innocent look that, at sunset, becomes one of the fiercest predators in the world, hides in the enchanted forest of Oma.

After a long night of hunting, in which his soft horns are transformed into sharp lethal weapons, he likes to relax taking a bath in the teapot that his grandmother gave him while he recalls, with satisfaction, the screams of his prey: Mu's trophies.