What if you came home one day to find some weirdo living in your house? What if that weirdo, in a barely understandable language, explained that he was your son? But you knew for a fact you had no children. This is what happened to André and Laurence Prioux, a bourgeois couple, stylishly living in a quiet upscale suburb.
　　Convinced they are victims of an error or a con man, André wants nothing to do with Patrick. But Laurence, faced with the inexplicable, suddenly becomes the mother she never was and welcomes with open arms this long-lost son, who sprung out of nowhere with his pregnant fiancée. And her dog. When a childless couple encounters family... Or makes it up.

　　作为一个中年男人，多姆（多米尼克·阿贝尔 Dominique Abel 饰）的生活可谓是乏善可陈，没有朋友，没有爱情，干着一份讨厌的工作，每天都要面对烦人的客户。一次偶然中，多姆结识了名叫菲欧娜（菲欧娜·戈登 Fiona Gordon 饰）的美丽女子，让多姆感到意外的是 ，菲欧娜竟然自称是能够实现他三个愿望的仙女。
　　完全不相信菲欧娜的多姆开玩笑似地许下了两个愿望，没想到隔天早晨愿望竟然真的成为了现实。随着时间的推移，多姆对这个神秘的女孩越来越着迷，然而，就在他决定正视自己的感情时，菲欧娜却失踪了。多姆怎么也不会想到，他和菲欧娜之间的重逢会发生在一间精神病院。