Marlène, a young woman who has just arrived in Paris, meets a boy with homosexual tendencies, who during their first night of love behaves in a sadistic way. At first shocked by this attitude, she took a liking to it very quickly. From then on, in all of her adventures, she will always go further into masochism, forcing her partners to endlessly mortify her, alone or in a group. A real madness has seized her, which will lead her to the most extreme perversions.

Respectable Monsieur Léon, nicely portrayed by Antoine Fontaine, is an unassuming bank teller by day, lover for hire with a specialist sideline in spanking by night!