Perugia. The police are carrying away the body of a young girl when a sigh reveals that she is still alive: her name is Rosa Lazar. Deputy prosecutor Cristina Camponeschi and psychologist Stefano Mangiaboschi investigate. Rosa seems unaware of the violence she has suffered and hides the truth. For Cristina, the girl is the key to an international investigation; for Stefano, it is the beginning of an inner journey that will lead him to discover the true enigma of Rosa Lazar.