In a world without loneliness in which everyone shares their life with their double, Lucienne is in a relationship with Paul, a former lover who has lost his twin. While she wants his love, he just wants to find his brother. Individualism and exclusive relationships are not tolerated in this world, generating more disgust from Lucienne. Her desire drives her away from her sister and probably from Paul.

Joseph 性格堅毅可靠。遇到任何難題，無論是個人的或是事業上的都能找到解決辦法。某夜，他接到一個神秘電話之後便離開建築工地，這建築計劃是他職業生涯中最能為他帶來聲望的項目。在工地入口，他必須決走哪個方向。無論向左還是向右，都意味着新的命運。生活的根基正一一粉碎，Joseph 唯有帶着自己的心魔和手機上路。