A gang of Spanish pickpockets decide to send one of them to Chicago to learn how to be a gangster...

Some bizarre figures (bullfighters and future fighters, athletes and boxers) get together in a park from Madrid to improve and rehearse their techniques.

Four young men are cited in a kiosk during a rainy afternoon. One has to study and the other three go to the cinema, although they are not allowed to entry because their young age. The group consists of Andrés, who works as bellboy in a hotel and dreams of becoming a bullfighter; Chispa, who follows the orders of an old grumpy man; Carlos, a student; and Negro, a shy boy. All they want is to have fun; but reality forces them to confront the problems of the adult world.