Michelle is enjoying a peaceful retirement in a Burgundy village, close to her longtime friend Marie-Claude. When her Parisian daughter Valérie drops off her son Lucas 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 gets out of prison.

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