Joan and David Shannon are living happily in Fayetteville, North Carolina. They have two young sons and two teenage daughters from Joan's previous marriage, who David adopted as his own. 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. Now Joan wants her husband David out of the picture. And she wants his life insurance money too. The only way she can afford to be with the man she desires is if David were dead. But Joan decides she won't do the dirty work herself. She turns to her troubled 15-year-old daughter Elizabeth and pressures her to commit the unimaginable — to murder her adopted father. But it won't be long before investigators discover a tangled tale of sex clubs, manipulation, and lies.