Dirk, who was almost forced out of the crown prince's seat because of his foolishness, succeeded in a coup d'etat with the help of the demons, killed his father the king, and becomes king himself. Then, with Princess Leila as a hostage, he succeeds in capturing her sister Lilia, a knight of the 1,000 princesses who are hostile towards his rule.

Then, the demons demands "Energy" as a price of cooperation. "Energy" is the source of the magic power that can be obtained when a noble soul falls into depravity and despair.