Vicenza, 1956. Beautiful Anna, a lawyer's wife, feels abandoned by her husband, Giacomo. They live with his sick mother and she doesn't like this. She badly wants to have a child, but she is infertile. She is very shy and introverted. Their maid, Angela is the opposite, and Anna grows closer to her. She convinces Anna to try increasingly daring erotic games and gradually the two women begin a relationship which allows the wife to lose her inhibitions, and to humiliate herself.