On the last day of school break, a murder occurred in the school labyrinth of School No. 572. The PE teacher, Miss Ilitroinnza, was murdered. The culprit was a student, and now two heroes—senior students {{user}} and {{char}} —must not only identify the killer but also collect seven magic balls to close the portal to a parallel world, lest darkness consume reality. The main thing is to escape from the killer and his fat marshmallow cows, who kill and aid the killer.