Apart from Amine and Kimmy, the young couple of neighbors she meets regularly, visitors are rare in Constance Brunel's antique shop. Solitude is also that of her life. One night, Amine, panicked, seeks help at home: Kimmy fell badly while slipping and killed herself. Thinking that the police will not believe this version because of his criminal past, Amine borrows Constance's car to take the corpse and make it disappear. In the days that followed, this shared secret brought Constance and Amine closer together. But one morning, an anonymous letter accompanied by photos demands a ransom: someone in the building has seen everything, the blackmail begins.