Andrew Wild, handsome, 30 something, married company director is caught by his managing director stealing from the company. He has been using money stolen from the company to fund his hobby of collecting model soldiers and for a lifestyle involving sex with a series of prostitutes. His MD Anne is a Dominant who already has a female slave Christine who is the company secretary.
Anne convinces Helen, Andrew's wife, that rather than bringing in the police and Andrew probably going to jail that there is a better way. She offers Helen a plan to turn Andrew into a slave for four months during which time he will be trained and punished for his crimes.
After a confrontation with Anne and Helen, in the presence of Christine, he accepts the terms of The Contract offered to him by Anne. His four month term of strict sexual slavery, involves orgasm control, anal sex, oral sex training, watersports, heavy whipping and serious amounts of humiliation inflicted on him at first by Anne but as events progress by Christine, and Helen his wife.
Helen also discovers a liking for la vie Dominatrix and a pleasure in lesbian sex.