At a very young age, Émilie and her brother are entrusted to their wealthy grandmother and their aunt who mistreat them. Émilie has only one hope: that her mother that she adores will be back! But the day she finally does move in with her parents, she discovers that behind the cool bourgeois family façade is a real hell. The admired mother turns out to be a monster: manipulative, violent, humiliating... In this environment where the parents have an unhealthy relationship, Émilie protects herself by taking refuge in her studies and the piano.