Hugo spends the summer with his grandmother like every year and, after playing all day in the field and with the animals, he spends the evenings among his toys in the living room. One night he realizes that every toy, but also every object and every living being, is always accompanied by a dark figure. His grandmother explains that those are not figures, but shadows. Then she tells him a beautiful story: it is the sun who creates them, so that, with the inevitable and silent company that shadows create, no one feels alone. And when night falls and the sun is not there? The moon takes care of it...