Two couples go to a mutual friends wedding, and end up swapping partners.

Paul Snider is a narcissistic, small time hustler who fancies himself a ladies man. His life changes when he meets Dorothy Stratten working behind the counter of a Dairy Queen. Under his guidance Dorothy grows to fame as a Playboy Playmate. But when Dorothy begins pursuing an acting career, the jealous Paul finds himself elbowed out of the picture by more famous men.