The strongest demon king in history returns from the dead and embarks on a grand adventure to find the god of all demons... and kill him! 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 intact. Wolgan is defeated, but the mutated spirit of the demon god is on a rampage! Can this monster really be Hiram's long-lost adopted daughter? With the fate of the city hanging in the balance, Hiram vows to defeat the powerful spirit while also saving what he can of his daughter... somehow.