瑞秋(玛琳娜·佛伊丝 Marina Foïs 饰)和文森特(尼古拉·杜沃歇尔 Nicolas Duvauchelle 饰)相识在一家珠宝店里,强烈的化学反应在两人之间产生了。然而,瑞秋和丈夫弗兰克(罗什迪·泽姆 Roschdy Zem 饰)结婚多年,文森特家中亦有娇妻特莉(艾洛迪·布歇 Élodie Bouchez 饰),受锢与伦理道德关系的四人决定逾越界限,来一场激情四射的“换妻派对”。 这场不道德的狂欢给四具肉体带来了前所未有的快感体验,然而,随着时间的推移,瑞秋发现弗兰克和特莉之间渐渐碰撞出了火花,虽然内心里充满嫉妒,但瑞秋却无法从这种混乱的关系中全身而退,直到有一天,特莉的女儿在母亲的日记里发现了这些成年人一直在玩的荒唐游戏。Story of two comfortable, affably married Parisian couples. When Rachel's jewelry business delivers to her web designer Vincent, their mutual attraction is readily apparent. It isn't long before Rachel invites Vincent and his wife Teri to dinner. Everything is very pleasant, relaxed and shabby-chic, very savoir-vivre. The instant physical chemistry between Teri and Rachel's husband, Franck is also obvious. After they've shared a few drops of wine and a large dose of metaphor, all revolving around a ping-pong table, Teri and Franck kiss. Everyone is mildly shocked, yet more intrigued and they handle it with a rather jejune sophistication. Soon they are regularly putting their sex lives on shuffle, passionately partner-swapping with an abandon that is both respectful and injurious to their ongoing marriages. At first they consensually agree to set no rules and enjoy themselves. As their feelings become more complicated they're forced to question modern relationships, responsibilities ...