At the core of this enormously bleak melodrama, there is a beautiful, passionate woman (Florence Marly, Chenal's wife) who capriciously oscillates between two men (Chiola, De Paula), even though she knows her fate is fatally linked to one of them.
Two gangs of drug traffickers try to control the monopoly of drugs in the city, while the police commissioner tries to kill them with the help of a snitch, "the puppet".
Giácomo is an Italian man in his forties who is single, dedicated to earning money in his business. He strikes up a relationship with a Spanish singer, whose brother encourages her to conquer him to take her money.