In a realm where mortals borrow powers from gods, and worships them; they receive rings that are conduits to godly powers. Our protagonist, Bell, follows a different route. In a tragic event, he receives a ring, not from a god, but from Belzeebub! With his mysterious powers of devouring and releasing the powers of others, he aims to become the Grand Warden - protector of the realm, and seek retribution for the death of his orphanage family. Follow Bell, an orphan mage, as he ventures through the world of magic, meet new friends, rivals, and fight against the evil, by using the power of one?!