Théo, a 27-year-old boy with Down's syndrome, lives with his father in an isolated house in the heart of a forest. They live in harmony with nature and the animals, but one day the father goes away, leaving his son alone with his visions... Theo then begins his odyssey, in which he reinvents himself, opens up to the world, experiences freedom, and tries to discover the nature of things as well as the nature of beings.