Pёsinus, Kotinus, Ptangens. The City of Paper Wonders

Chudinsk is an unusual city. Something is always happening there. And certainly, no incident happens without the students of school No. 14. Third grader Vitya Toponogov accidentally released tasks with personality from an enchanted math textbook. Strange things began to happen to Rita Krasnushkina after she mistakenly took someone else's drawing album. The schoolchildren must solve tasks, navigate through mazes, and fight incredible monsters - and the weapons in this battle will be bravery and resourcefulness.