The police station receives a phone call about the disappearance of a child during a school trip with the nuns. Aragona and Romano rush to the museum, the last place he had been seen, where they question the sisters and a little boy.

Alice and her friends know that something serious has happened to Joy, but their parents have only told them to be patient and that their friend will return soon.

During the concert rehearsals, Marioni believes that Barbara hasn't put in enough effort because she has dedicated time to studying philosophy. He therefore decides to exclude her and warns the others not to console her.

Lojacono and Di Nardo gather information from the couple who were robbed. When they leave the apartment, they agree that there are some strange things. At the police station, Aragona goes to talk to Romano.

Paolo and Maura celebrate their wedding with a simple lunch in the company of friends. Paolo starts his new job, where he meets two of his colleagues and is shown his desk.

Sara goes to talk to Gigi, who is playing his guitar and singing on the street. When Robbo returns home, he finds Chiara upset, who tells him she's gotten into trouble. Barbara, on the other hand, has to face Marioni again at the orchestra rehearsal.

The atmosphere at the police station is gloomy as the end of the year approaches and the closure of Pizzofalcone is imminent. Lojacono and Di Nardo are out investigating a theft case in an apartment.

After the failed love challenge, Paolo leaves the hospital and starts getting serious with Maura. When their baby girl is born, however, he is forced to ask his family for help, but they impose a condition.

Maestro Marioni listens to Domenico and Barbara play and is very harsh in his criticism of the girl's playing. Despite her friends being supportive of her, Barbara decides to go home to study instead of going out after the rehearsal.

A group of school kids visits a museum of trains. Pisanelli, after being discharged from the hospital, goes to the pharmacy to get the medicine prescribed by the doctor.

Paolo asks Polio for advice on how to convince Maura that he is serious. In the evening, on the beach with his friends, Paolo prepares to prove to Maura that he loves her with a test of courage.

When Marioni gets home, he finds Irene waiting for him in her car. She knows Giacomo had shown up at school. The next morning, there is a rehearsal of the orchestra, followed by the Mozart sonata for two pianos, played by Barbara and Domenico.

After Meg's confession, Gaetano and Camilla go to dinner to discuss the conclusion of the case. While talking, Gaetano asks Camilla something but at that moment she receives an emergency phone call from home and rushes off without answering.

Laura and Giuseppe are at the restaurant when Laura notices that one of her colleagues is there with a woman who is not his wife. Laura insists on leaving the restaurant, but once back home, they have an argument.

Paolo goes to the beach to meet Maura, and when she gives him her important news, he thinks she's joking. Maura, hurt by Paolo's reaction, goes to get some support from her friends who aren't much help.