Moments after being born in a suburban hospital, little Oscar flies towards the stormy sky, as light as a balloon. Maybe it’s a miracle, maybe a trick of nature: his lack of gravity can’t be explained. His mother and grandmother, affectionate but frightened, keep this wonder hidden for years. When the scientific community eventually learns of Oscar, he becomes a world star. But the only thing he wants is to run away, to be like everyone else, and to find the only woman who has ever cared for him.