Clara Garnier, 5 ans, est enlevée. Ses ravisseurs demandent une énorme somme d’argent pour la libérer. L’échange de la rançon se termine en bain de sang et l’enfant ne réapparaitra jamais. 25 ans plus tard, Aurore Garnier, la sœur aînée de Clara, devenue officier de police retrouve Clara vivante In 1993, five year old Clara Garnier is kidnapped. The ransom exchange ends in a bloodbath and the child vanishes. 25 years later, Clara’s older sister Aurore, a police officer, finds proof that her sister is living under another identity in Italy. Against her family’ wishes, she persuades Clara to come back to help her discover the truth behind the kidnapping. But Clara’s return unravels family secrets and triggers a series of violent events.