Max studies in the most boring school in the world: more than 777 school rules, mathematics eight times a day, laughter and pranks are strictly prohibited, and the classes are dominated by a sleepy kingdom! But something interesting happens at school - he is immediately banned. and now the whole class is punished with extra classes until the end of the school year. The only hope is Inspector Reyvach from UPZN, who visited with a secret mission and entrusted the boy with an important task. The young spy must find a secret room and avoid the eyes of the principal. There are many obstacles on the way, but at the risk of cancellation of additional lessons