When her Parisian daughter Valérie (Ludivine Sagnier) drops off her son Lucas (Garlan Erlos) to spend school vacation with his grandma, Michelle, stressed out by her daughter, serves her toxic mushrooms for lunch. Valérie quickly recovers, but forbids her mother from seeing her grandson anymore. Feeling lonely and guilty, Michelle falls into a depression... until Marie-Claude's son Vincent (Pierre Lottin) gets out of prison. This film is a gift of a showcase for Hélène Vincent - she is magnetic. But nobody is exactly who they appear in Ozon’s nimble, perceptive film.