Plot

While waiting in a bar for her boyfriend, Lew, Lori meets Mrs. Shaw, a rich widow known as The Madam and is invited to her home. The invitation is repeated at several subsequent meetings and finally The Madam offers Lori money to have sex with Lew while she watches. As the couple make love, The Madam masturbates, fantasizing that Lew is her partner. After several similar encounters, The Madam asks Lori and Lew to supply her with other young couples. At a party given by the mate swapping club to which they belong, Lori and Lew recruit Tim and Sally to perform for The Madam and eventually she hires two additional couples. One day The Madam asks Lew to perform a rape for her and she promises to provide a woman. Believing that his partner has been similarly hired to perform in the rape scene, Lew violates her. In reality, the unsuspecting woman has been hired to participate in a lesbian act. The victim's boyfriend, who has been waiting downstairs, bursts into the room and attacks Lew. The boyfriend is accidentally killed in the fighting and the police apprehend The Madam and her performers.