While Barbara's mother wants to make sure her daughter has overcome the difficult move, Matteo sings a song about feeling inadequate. Meanwhile, Marioni unexpectedly meets Irene.

The kids get together to practice all together as instructed by Marioni. However, when they start talking about themselves, they lose the desire to play and change their plans.

Marioni realizes that the boys haven't practiced as they claim, so the teacher talks to Domenico who admits that they did indeed meet, but didn't play. Nathan's parents complain that Matteo's arrival is slowing down their studies.

The kids continue to practice with their instruments and go to lessons, but there's no shortage of love dramas and first kisses. Sara is dealing with her ex who just won't accept the breakup.

Maestro Ruggero Fiore, who has conducted in the most important theaters in the world, will arrive at the conservatory. Professor Marioni defines and assigns the roles of each musician within the orchestra, but not everyone is happy.

After Marioni assigns the orchestra parts to play in front of Fiore, moments of nervousness arise among the students. However, at the conservatory exit, the scene that creates the most tension is an unexpected return.

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.

After the meeting with the doctor, Matteo meets his uncle who invites him for an aperitif. At the venue, they are served by his uncle's ex and Matteo teases him about it.

Irene tries to convince Luca to leave with her after finding out that he saw Giacomo in front of the school. Meanwhile, the kids continue with their concert rehearsals.

Maestro Marioni listens to Domenico and Barbara play and doesn't spare harsh treatment towards the girl. Despite her friends being supportive of her, Barbara decides to go home to study instead of going out after rehearsal.

Sara goes to talk to Gigi and invites him to her house to talk but another time because tonight she's with her friends. 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 in class.

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 if they try to console her.

Matteo and his uncle seem to be very similar when it comes to feelings, and perhaps uncle Daniele isn't so happy about it. Scheggia and Sofia go to eat at her mother's restaurant and tease her a bit.

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.

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.