一个商人和她的情妇，商人的妻子和情人，商人的儿子和两个同事：他们都在不知情的情况下聚集在一家乡村客栈，度过一个非常性感的周末。

Lucille, a paralyzed girl, is the scapegoat of her sister and her cousin Josine and Elisa. During a "game" that goes too far, they accidentally kill the lover of Elisa. Whilst attempting to make Lucille bear the guilt of the killing, they discover the frightful secret that would explain the vegetative state of Lucille.

Henri Verdier, a young bank manager, has made the acquaintance of Karine, a model of great beauty. Robert, who claims to be Karine's brother, forces Karine to introduce him to Verdier. This is to offer him an urgent business deal: 50 million for a uranium purchase which, within a few days, should yield double that amount. Blinded by passion, Verdier accepts and "withdraws" the necessary sum from his bank. He soon realizes he's been duped. Karine is not Robert's sister and Robert is a crook. Verdier tracks them down.