In a small village called Holt, a young human man named Adell lives with his demon parents and siblings. They have been turned into demons because of a curse cast by the Overlord Zenon of the Netherworld. Adell is the only one who has remained a human. In the opening scene, Adell's mother performs a summoning ritual in hopes to summon Overlord Zenon so they can kill him and break the curse, but instead summons Rozalin. Rozalin introduces herself as the princess and daughter of Overlord Zenon and shows the royal seal of Zenon. Because of the seemingly failed ritual, Adell plans to find Overlord Zenon himself in a quest with the help from Rozalin and other characters throughout the game.