Hiram, the strongest demon king in history and ruler over all of demonkind, refused to obey the demon god’s demand for sacrifices. A fierce battle ensued, which ended with Hiram losing his life.

Five centuries later, Hiram successfully reincarnates himself as a young human with his magical powers and combat ability from his previous incarnation. He sets out on a journey to locate his adopted daughter, Philffy, as well as the Demon God, who is hiding somewhere in the world.

After rescuing Lumiere, a royal elven princess, Hiram agrees to mentor her in the arts of magic. But soon, he gradually finds himself more and more entangled in a dark conspiracy brewing in the Kingdom of Orteville...