Marioni is summoned by the principal because he received a warning from Giacomo's parents who hold him responsible for what happened to their son. During rehearsals, the maestro discovers someone who shouldn't be in the hall.

The JAMS arrive at school in a rush, where the awards ceremony is already underway. Chef Borghese has just awarded the trophy but asks the winners if they would rather win by challenging the JAMS. Oscar, as captain, decides to continue the competition and they begin.

The JAMS are a group of four and without Joy the finales make no sense. Alice, Stefano, and Max go to visit Joy to show her just how important their friendship is and to let her taste the cake they made.

Matteo meets Sofia to whom he confesses being excited about the concert. At Sara's house, Gigi plays for her parents the song he composed for her. Robbo and Chiara unfortunately witness an argument between their parents.

The finals are approaching and Alice, Stefano, and Max record a video of the recipe they have chosen as an appetizer to send to Joy. The JAMS don't want Joy to feel alone and wonder what point there is of participating in the final competition without their friend.

Matteo and his uncle Daniele seem to be very similar in some ways, but perhaps Matteo shouldn't be copying his uncle in every way. Scheggia and Sofia go to eat at their mother's restaurant and tease her a bit.

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.

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.

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.

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 the meeting with the psychologist, Matteo meets up with his uncle, who invites him out for un aperitivo (a drink). At the pub, Matteo teases his uncle because the waiter happens to be an ex-boyfriend of his.

New captains, absences, and tensions liven up the competition. The four desserts are being judged, deciding who will go on to the finals. Afterward, the JAMS make a video for Joy to share the results with her.

Marioni manages to reach Giacomo to tell him that he's sorry for how things turned out but also to encourage him to move on with his life. Matteo goes to talk to the new psychologist but puts up his defenses by saying that he doesn't talk much.

Joy begins to open up with the therapist, while her team members are dealing with a race against time at the contest. At the end of the competition, the professor starts handing out grades.