Matilde, a dying little girl, will search for the stone that allow her not only to fulfill her dream of becoming a horse, but also, perhaps, even cheat death.
Natalia, a bird-loving girl, moves with her mother to a mysterious town where there are no other children, and the adults can't seem to see her. Driven by curiosity and unease, Natalia embarks on a search that leads her deep into the forest, where she discovers a cave inhabited by forgotten children.
