The new commissioner Fontana introduces himself to the agents of the X° Tuscolano and the new inspector Marchetti. He must protect a collaborator of justice, Nina Neri. The police are looking for Jacopo, a three-year-old boy taken from his mother at the supermarket. Young Angela is raped at night by three masked men, just outside a gay nightclub. Fontana entrusts the case to Luca Benvenuto. Angela has recognized by the voice a boy who frequents her gym and Luca infiltrates it.