After Gillian discovers that her best friend, Lindsay, isn't as uptight as she expected, she reveals a provocative secret. Gillian and her husband, Joe, are swingers and they're eager to invite Lindsay and her husband, Patrick, into their fold. Aroused by the possibility of an open marriage Lindsay shares this news with Patrick, who eventually agrees to give it a shot. But when he is slow to take the initiative with Gillian, the two girlfriends surprise him with an afternoon of explosive sex. Caroline and Tyler enjoy a very emotionally and physically satisfying marriage, but that doesn't prevent their insatiable curiosity from creeping in from time to time. Fascinated by the dynamics of the swinger lifestyle, the two set their sights on close friends and swingers, Jenny and Max. But after a failed attempt at seduction, Tyler and Caroline are worried they might not have the game it takes to succeed in the lifestyle.