Seville 1913. Juan is a weak-looking boy who has grown up in a marginal environment. But it transforms when at night it challenges bulls in fences. Calderón, an old bullfighter, looks at him, in his rare ways, in his passionate attitude, and guided by a strange obsession introduces Juan into the way of being a bullfighter. In a short time, Belmonte becomes a hero in his land, but his great challenge will be to face Joselito in the most important square: Madrid. Biographical film around one of the most emblematic bullfighters, Juan Belmonte.