Arianna's life is turned upside down when her husband Fabrizio, councilor of a small town in the Turin area, is killed. A series of overwhelming evidence, and the suspicion that it is a crime of jealousy, lead all suspicions to focus on her. But, before her arrest, Arianna runs away, losing track of her: how is it possible that a mother of a family that everyone recognizes as blameless disappears into thin air? And what is she hiding?