Silvia belongs to a respectable family, the wife of a jeweler in Turin, but charming woman bored by marriage. One night she is alone at home and unwisely opens the door to a stranger trying to rob her and eventually decides to rape her. The police and her husband try to convince Silvia not complain, but she starts looking for the man who raped her for revenge. When he finds, however, is attracted by humiliation and violence suffered and she becomes his lover with anything.