The modern world is similar to ours, but everything that happens in it is like an RPG strategy. You have a limited inventory and weapons, you can drink magic potions and level up, there is only one “but”. According to ancient legend, when the sun sets below the horizon, the Black Beast, the harbinger of the end of the world, wanders through the school corridors, looking for easy prey and destruction of the lands. Ilya Silantiev, a capable student who is destined to be chosen from birth, will do anything to prevent the prophecy from becoming reality and to erase the name of the enemy from the face of the earth. What tricks will he go to for this and what secret is his family keeping from him?