11-year-old Alexandrine lives in a wealthy and happy family. Little by little, we learn that she is anorexic, that her school results are deplorable and she is almost silent. She screams in silence, a terrifying shadow enters her room at night. She is overwhelmed by the horror: incest. Her mother, her friends, her grandparents don't want to know anything. It is obvious that this "kid" is fabricating. Everything would be called into question, their life would collapse. However, his French teacher encourages her to file a complaint. But she cannot go to the end and gives up the titanic fight. Then justice sets in motion to reveal the horrible secret.