Max (Vincent Castle Vincent Cassel) and his girlfriend are about to get married, but he is surprised to see his missing ex-girlfriend Lisa (Monica Bellucci Monica Bellucci). The past flashes back: they used to be a sweet couple, but missed the relationship because they didn't deliver a letter to Lisa-a pity caused by Lisa's neighbor Alice (Romana Pauline Romane Bohringer), who has been secretly in love with Max for a long time, and the letter Max told her to give Lisa has been shelved all the time. Now, Alice lives in Lisa's old apartment. When Max went into the apartment to look for Lisa, he saw Alice. The two had sex, and Alice finally got the man of her dreams and repeatedly set a trap for Max and Lisa to pass by and never see each other again. Lisa's tragedy is much more than that. After getting Max's Alice, she chose to walk away and saw Max and his fiancee hugging each other at the airport with a mixed smile on her face.