Greg founded a company called Alibi.com that creates any type of alibi. With his associate, Augustin, and Medhi his new employee, they devise unstoppable stratagems and stagings to cover their clients. But meeting Flo, a pretty blonde who hates men who lie, will complicate Greg's life, which begins by hiding the true nature of his activity. During the presentation to parents, Greg understands that Gérard, the father of Flo, is also one of their clients . 脑洞大开的法国人。尺度real大！。撒谎的人终究会被谎言反噬。笑的我肾疼，法国人为了偷情太能玩。又污又爆笑！岛国电影都比不上它！。 格雷（菲利普·拉肖 Philippe Lacheau 饰）是“借口.com”公司的创始人，专门为需要“打掩护”的客户制造各种各样的借口和谎言。因为特殊的性质和高需求，公司的经营蒸蒸日上。一次偶然中，格雷邂逅了名为弗洛（艾罗娣·方坦 Élodie Fontan 饰）的女子，弗洛的天真和单纯深深的吸引着格雷，令后者坠入情网。格雷深信，她就是他命中注定要寻找的另一半。 然而，令格雷头疼的是，弗洛是一个对“撒谎”零容忍的的人，如果告诉了她自己的真实身份，她一定会愤怒的拂袖而去。无奈之下，格雷只得用谎言将自己重重包装，在虚伪的假面下，格雷终于和弗洛走到了一起，可是当他到弗洛家做客时才发现，弗洛的父亲竟然就是自己的客户。
