A song about pain and heartbreak serves as background to the students who receive news of maestro Marioni's absence, due to a minor accident. The suspension of orchestra rehearsals generates different reactions among the young people, between relief, expectations for an upcoming concert and reflections on shared work.

Rosario is troubled and, returning home, confides to his foster parents that he will meet his mother in his own way, alone. Meanwhile, Sofia and her brother exchange sharp remarks, while Marioni relives memories from the past, and a sudden bicycle accident transforms a quiet evening into a moment of great apprehension.

Through song, Matteo, rejected by Barbara, who chooses to remain just a friend, expresses his pain. Sofia's unconfessed feelings also emerge, as she loves Matteo in silence.

The group gets together for an evening among friends, marked however by some absences. Between relationships that are ending and unexpected revelations, the group still tries to stay united. A final toast celebrates a friendship that endures, despite everything.

Marioni interrupts a lesson by his colleague Guido and harshly confronts Nathan, ordering him to show up for rehearsals with the others. The tensions center around Sara, causing conflicts to explode in the group and bringing personal vulnerabilities to light.

Domenico postpones his appointment with Gloria, who is hurt and fears something is wrong. Matteo tries to make peace with his uncle to confess that he has invited some friends to dinner, while Sara finds herself dealing with a disappointment that puts her to an emotional test.

Between moments of daily life and traumatic memories, lightness and reflection intertwine. Matteo organizes an evening with friends, while Domenico has an intimate conversation about music and a love still apparently to be discovered.

Rosario is in a bad mood and is isolating himself from the group. Matteo, happy to have stopped by Barbara's, seizes the opportunity to invite the whole company to dinner.

During an orchestra rehearsal, tensions, frustrations and conflicts emerge among the musicians. Between sarcastic comments, misunderstandings and an open confrontation with the conductor, the group is forced to confront the meaning of truly working together as an orchestra.

Between breakfast and preparations, affection emerges but also tensions. Robbo and Chiara's mother tries to reassure her children in the face of a possible separation while Sofia tries to downplay the fact that she put on makeup.

After the auditions, Domenico asks Barbara if he can walk her home, but she refuses. Robbo and Chiara go to eat pizza with their father, who however has to give them bad news and Chiara takes it badly. Matteo, on the other hand, locks himself in his room and won't even let his uncle in.

Rosario chooses to avoid the encounter with his mother, so he makes up an excuse and returns to class. Meanwhile, in the lesson, Marioni puts Sara to the test, but she is determined not to give up.

Matteo and his classmates, during the break, get together to cheer for Sara in the hope that she manages to convince Marioni to let her play with them. Rosario, on the other hand, is agitated and this doesn't escape either the boys or his teacher.

In class, Barbara proves to be much further ahead than her classmates in the curriculum; for this reason the teacher decides to assign double the homework to all students. Meanwhile, Sara continues her battle, trying to convince Marioni to give her the chance to play.

Irene becomes furious with Luca when she discovers that he is obsessively following and controlling Marco, while she takes refuge in a fictitious identity to distract herself from her own thoughts. Meanwhile, Barbara arrives at the new school and Sara makes a request with a determined tone.