The newborn Francesco, son of Roberto and Francesca, is saved after a long operation. He is immediately celebrated by his siblings Michele and Mauretta and by the agents of the X Tuscolano. The new commissioner understands that he must deal with a character from the past, Cesare Carrano, today an important builder and instigator of the attacker of Francesca by Maiorca. He is also the father of Ruggero, the murderer of Milo that Roberto wounded before the escape, now a fugitive. The new inspector of the X Tuscolano Irene Valli finds herself involved in a robbery in the store, where she and her nephew Stefano, eleven years old, happen to be. The two criminals do not hesitate to kill the owner of the store and beat the boy. With the excuse of wanting to treat him, Irene manages to make Stefano escape, who immediately calls Mauro. When the officers arrive, one of the criminals flees, taking a customer hostage.