Even though Laurent is fond of Camille and has been in a relationship with her for some time, he cannot bring himself to marry her. It turns out that his instincts were right, because when he then meets Élodie he realizes that he doesn't really love Camille at all. It is Élodie who is Laurent's perfect soul mate, Élodie who makes him feel fully alive for the first time in his life and with whom he wants to spend every last second of his remaining days. In short, it is Élodie whom Laurent loves, not Camille. But there's just one little problem. Élodie is presently engaged to Laurent's best friend, François. The latter is stunned when his fiancée suddenly leaves him without any warning. Certain that she has found herself another man, François hires a private detective to uncover the identity of this mysterious individual.