Artists Tusse Chiza and Linnea Henriksson go to an ordinary secondary school to see if they can get the students there to play more music. It's a tumultuous encounter as Tusse and Linnea are thrown back to their own high school experiences.

Tusse Chiza and Linnea Henriksson begin their music project and start rehearsing with the students of the school. But Tusse finds himself in a difficult situation when some of the students get angry with him. Nassim Al Fakir comes to the rescue to help them with a difficult problem.

The students' shyness towards each other creates problems as Tusse and Linnea continue their work at the school. Can Tensta Gospel Choir provide the necessary inspiration? Also, a student invites Linnea to a very special concert.

Tusse sings "Voices" on Leisure Center Day and Linnea goes to the "ABBA studio" with a song the students have written themselves. In addition, the rapper Jelassi comes to the school to help a student in trouble.

The students are invited to play at a retirement home and Tusse lures Linnea out into the forest to sing at the school jog. As if that weren't enough, there's trouble at the 9th grade dance. Can Tusse and Linnea solve the problem?

It's almost time for the students' big concert and time is running out. How will everything work out - will everyone be able to cope with the pressure or will everything turn into a mess? And what about the ninth graders who are at risk of not qualifying for upper secondary school?