Teo, a private detective, never decides to heed his fiancée Sonia's requests to abandon his dangerous profession and go work for her father, a wealthy industrialist. A new case always comes up, causing Teo to postpone his visit to his future father-in-law. However, one day he is hired under mysterious circumstances: he receives orders from a woman he doesn't know to do something that is still unclear. Nevertheless, the woman pays him handsomely and gives him a vague idea of the case. To his surprise, as soon as the woman leaves, Teo is attacked by four men. Recovering from his injuries, he begins to investigate his client...

Dr. Leme, a rich old man, is frustrated about not having children with his wife Raquel. In his mansion, he gives parties filled with drinking and sex with his secretaries. André, his driver, becomes lover of Rachel and they plan to kill Leme to get hold of his fortune.