First day of school for the students of a high school, but there is a news: on the initiative of the principal (Alessandro Preziosi) some students have been moved from their classes to a section created especially for them, the H section. The students of section H have not been chosen randomly, they are in fact notoriously troublesome, too lively and lazy. Among them there is Ricky (Enrico Oetiker) who is smart and doesn’t miss any opportunity to make annoying jokes that he shares on Youtube, Stella (Greta Menchi) whose only interest is the look, Viola (Alice Pagani) smart but always at war with the world. For the kids, life in the new section is a treat, and professors seem to have lost all hope with them and don’t even try to make them study anymore. The only professor who enters the class with sincere enthusiasm and ready to challenge them even if he is just a substitute teacher is Marco Andreoli (Andrea Pisani), the Italian professor whose role model is Professor Keating from the movie “Dead Poets Society”.