During the orchestra rehearsal, a player makes a mistake and Marioni, the conductor, doesn't hesitate to press the point, in his usual cruel manner, that an orchestra is not a democracy.

Marioni tells the orchestra what he has in mind to help Matteo get integrated into the orchestra. The students involved begin to get organized by sharing their phone numbers.

Marioni asks Sara for help with Matteo. In the evening, Matteo is out walking with his uncle who is being a bit over-protective.

The students tasked by Marioni to help Matteo create a chat group, and Sara immediately puts her foot in it. At Robbo's house, things are a bit tense and little Chiara is worried about what might happen.

A chaotic day in Italian class: Amid grammatical difficulties, unexpected incidents, and group dynamics, tensions, irony, and solidarity intertwine among students and teachers.

Outside school, Sara meets up with Gigi her boyfriend. She has taken Matteo with her to have some company, since the discussion isn't going to be pleasant. As they go back into the building, Maestro Marioni appears, looking for Matteo.

Maestro Marioni asks Matteo what he wants to do with his life in music and is not satisfied with the answer he receives. almost yelling, Marioni urges Matteo to do more than merely give it a try.

After the heated confrontation with Marioni, Matteo leaves class and goes to see the director who shows understanding and suggests that Matteo doesn't have to be in the orchestra. When he leaves the office he runs into a classmate, a percussionist.

Barbara has a lesson with another pianist, in which they play a piece for 2 pianos. She is clearly ill at ease with the other pianist. Later, Matteo finds her notebook on the floor in the hall and tries to engage her in conversation.

Barbara's piano teacher notices that she is tense and wants to talk about it. Barbara just wants to get down to work. Robbo and Chiara are at home not feeling too well and trying to deal with what they had discovered regarding their mother.

While Chiara and Robbo explore their secret place, their father returns and suggests cooking together with them. Clelia and Roberto hope to obtain permanent custody of Rosario, and Barbara's mother is happy with her daughter's results and wants to reward her.

Barbara's mother wants to make sure her daughter has overcome the difficult move. Matteo sings a song about his feelings. Meanwhile, Marioni makes a surprise visit to Irene.