萨沙（加德·艾尔马莱 Gad Elmaleh 饰）是一个四十岁的广告作曲人，常言所道的四十不惑在他的身上却没有半点体现。萨沙害怕承诺，恐惧稳定的关系，对他来说，能够随心所欲的做任何自己想做之事才能真正的算得上是活着。这让幼稚的个性让萨沙周围的朋友和亲人们吃了不少的苦头，他的母亲甚至至今还保持着替儿子打扫公寓和清洗衣物的习惯。 萨沙这令人头痛的状态眼看这就要一直持续下去了，直到他遇见了那个叫做夏洛特（苏菲·玛索 Sophie Marceau 饰）的美丽女人。夏洛特和丈夫离了婚，辛苦的独自抚养着三个孩子。当爱情的火花在这两个个性截然不同的成年人之间燃起时，会发生怎样有笑有泪的故事呢？
ISSAC is an intense psychological thriller which constantly treads the lines of reality and fiction. Issac, A young reclusive mortician who inherited his stepfather's mortuary business meets a friendly waitress, Cassi. The two create an instant connection and after a night of terror, they pursue a revenge murder together. This film mixes a realistic story with surreal imagery, showing how one in isolation may operate due to the circumstances he has been given. Issac inevitably makes a choice and never questions the morality of his decisions.
