A nightclub. Richard O meets a young woman whose fantasy is to be raped. She asks him to fulfil her desire... At first, Richard accepts. Then he refuses. A violent altercation breaks out, and Richard is accidentally killed. Several weeks earlier...and Richard is in thrall to his desire for women. In the company of his friend, Le Grand, he will explore the tortuous mysteries of the erotic underground, through Paris and its inhabitants, one sweltering August.