Serena is completely broke and living in a boarding house, but she's not supposed to know. When her daughter is caught stealing money from a classmate, she starts making deliveries to Mimmo "the Frenchman." Piero struggles to manage the two lovers and finally manages to come clean to Virgilio about the fact that he hadn't actually slept with his girlfriend Anita twenty years earlier. Lorenzo and Luisa, using the excuse of studying, begin spending a lot of time together, but neither can bring themselves to make the first move. Meanwhile, Francesca is obsessed with her new math teacher, Daniele Di Giulio. The group decides to pressure Professor Russo, but then, in a fake robbery attempt, Piero gets the worst of it when she punches him and ends up in the hospital. There, they also find Di Giulio, who was brought there by Francesca after being attacked by thugs outside his restaurant.