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.

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.

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.

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.

Sara offers to walk Chiara home, and the two have a conversation about how it feels to be visually impaired. At the rehearsal, Marioni expresses his frustration with orchestra's lack of passion in their playing and discusses the significance of performing the Unfinished Symphony.

Matteo stays to play his solo for Marioni, who makes him play without looking at the music. Outside, the others in his group discuss how long they think he will endure Marioni's harsh treatment.

Matteo is about to leave the rehearsal after his argument with Marioni. Irene is there in the auditorium, having learned about the warning to Marioni, and wants to be there for him. He asks her to stick around.

After being kicked out of Marioni's class, Matteo returns home, where his uncle is waiting to introduce him to Lorenzo. Matteo goes out with Domenico, who tells him some things about Marioni. Meanwhile, something has happened in the group chat.

Maestro Fiore has arrived and introduces himself to the orchestra students. He says he is just like them and wants to feel their music and their energy.

Matteo and other friends show up at Barbara's house, but she hasn't returned yet, so they talk a bit with her mother about the concert without revealing what happened to her daughter. Barbara doesn't take the visit well and asks her friends to leave.

Barbara is aware that she is making all sorts of mistakes, but she counts Domenico as being outside her "diary of errors." All this is expressed in a song she sings.

From the audience, with Sara, Marioni watches the rehearsal led by Maestro Fiore. He doesn't seem to think much of Fiore's method. At the end of the rehearsal, Matteo's uncle is waiting for him outside to take him to his therapy appointment.

Alice introduces us to her group of friends. They've called themselves "JAMS" and we find out why in this episode. She begins telling us the story of how they got to know one another. Alice talks about la prima media. This is equivalent to the first year of middle school or the 6th grade of elementary school. The kids are about 11 or 12 years old.

It's the first day of school for our friends. In fact, it's their first year of middle school. The desks are set up for pairs of pupils, so choices have to be made as to where to sit and whom to share a desk with.