The Sex Monster is a comedy film about a happily married man Marty (played by Mike Binder, who also wrote and directed the film) who wants to spice up his love life with wife Laura (Mariel Hemmingway). Martyâ€™s life is perfectly appeasable: he has a nice house with a yard, nice car, and his own construction business. But he wishes he had more excitement, and seeks it in the bedroom. His idea is the quintessential male fantasy: a threesome with his wife and another woman. His wife is initially very skeptical, but finally agrees to it. But once she is intimate with a woman, she realizes that she doesnâ€™t need her husband to have fun between the sheets. Lauraâ€™s attraction to woman began with Martyâ€™s suggestion, and now Marty is paying the price. The movie also stars Renee Humphrey as Didi, Kevin Pollak as Dr. Jerry Berman, and Stephen Baldwin as Murphy.