A rich man, his beautiful wife, and her young lover form a triangle of romance and revenge: One night, advertising executive Jim (C. Thomas Howell) picks up a beautiful woman in a grocery store and they have an affair. Unfortunately for him, she's Caroline Everett (Joan Severance), the wife of rich, powerful, and vengeful businessman Roger Everett (Malcolm McDowell). When he meets her again, their relationship blossoms. Roger finds it out, and sets out to ruin his life.

A chance encounter with a blonde in a sports car causes Jack to give chase in his souped up mustang and culminates in a car crash and a sexual encounter. The blonde asks that he sign that the accident was really her husband's fault, who was not even present, for insurance issues. Jack agrees and finds himself the alibi for murder and with his own past criminal record, he fears jail for lying under oath.