Rudi takes part in a psychological test and the result, to everyone's surprise, is that the boy is a genius. Giulio, enthusiastic, does everything to satisfy his son's needs and stimulate his intelligence. Alice, suspicious, discovers that the Leonardo da Vinci of Garbatella copied the answers. Lucia convinces Rudi to confess and the father's punishment is not long in coming.

Marco seems increasingly strange and it is now clear to everyone that he is in love. However, no one suspects that the lucky girl is Eva. Meanwhile, Sergio shows up at the Cesaroni house and, on the verge of being named Cavaliere del Lavoro by the President of the Republic, he would like to take advantage of the opportunity to embarrass Giulio and win Lucia back.