The Shannons may seem like a typical family, but beneath the surface, Joan and David lead a secret life. They are members of an underground sex club that caters to their erotic, sexually charged lifestyle — Joan and David are swingers. They're allowed to swap partners at organized sex parties, as long as they don't fall in love. It's not uncommon for David to proposition men to have sex with his wife. And in late 2001, he invites a local man named Jeff to join their swingers club. Joan and Jeff share unforgettable nights filled with sexual fantasies come true. But little does David know, Joan develops feelings for Jeff that run deeper than he could have ever imagined — she has fallen in love. The cardinal rule of their swinging lifestyle has been broken.