Nicole, nurse in Grenoble, is raped one night by four men. Deeply scarred, emotionally and physically, she thinks she will never recover from the trauma. Following a friend's advice, she decides to file a lawsuit.

Having fortuitously discovered a photograph in which Marthe embraces someone unknown, Étienne Dorsay becomes jealous and imagines various stratagems to identify the lover. In the meantime, he and his friends acquire a weekend house for a very low price.