Un Jeu d'enfants

Marianne and Jacques are a young middle-class couple who live in a chic Parisian apartment with their two young children. One day, Marianne receives an unexpected visit from two strangers, Mr and Mrs Worms, who claim to have lived in the apartment when they were children and who ask if they can just take a look around their former home. Marianne agrees, but no sooner have the mysterious Worms left than things take an inexplicable turn for the worse. The two children appear to be behaving very oddly, Marianne is cautioned for shop-lifting, and Jacques has a nervous breakdown after assaulting one of his colleagues at work. And there is worse to come. Marianne suspects that their apartment is the cause of their bad luck and soon discovers that it has a tragic history...