The main character, Vasiliy Ruchkin, the son of the important regional officer, enters the most prestigious educational institution of the country – Academy of the top-level officials. The place is weird and even mystical. Vasya discovers unusual super abilities in himself and acquires both friends and enemies. Woodlander Ivan is a hereditary sorcerer becomes the closest friend of him. Thanks to his knowledge, Vasya finds out he has been chosen as Devil's Mentor in the human's world, to be their regent and a judge. Vasya has been chosen by Morty Gnomus who before his death handed him a signet ring down called The Great Devil.