Nazareno Cruz is the seventh son of a couple living in a high mountain village. According to a myth, a seventh son will become a wolf on nights of the full moon but this doesn't occur to him. When he's older, he meets the Devil, who offers him the wealth of the world if he turns his back on his newfound love, but if he refuses, he'll become a wolf.
Mario, “el Rulo,” is a wanderer who travels the country giving artistic performances. One day he passes through the town of Carlos, a municipal employee who dreams of being an artist. A friendship is born between the two of them, and Carlos leaves it all behind to follow Mario.
The story of Jose Maria Gatica, better known as Gatica el Mono, Argentina's main boxing star during the 1940s and 50s.
