Two couples are caught inside a bomb shelter as nuclear war rages outside.

A man's body turns up on a Barcelona beach with a message tattooed on his arm: "I was born to revolutionize hell". Detective Pepe Carvalho is put in charge of the case, taking him from the back streets of Barcelona to the Amsterdam canals, with no effect whatsoever on his peculiar investigation methods.

Adrián, a businessman who runs his wife's family industry, begins an affair with Marisa, an employee at his office. Marisa tries to blackmail her mature boss who has fallen into her trap. But the plot takes an unexpected turn, and it turns out that he is the one who dominates the situation and uses the young woman for his own benefit.