They are the apostles of God, they are the dark priests of the Black Order, and they are exorcists with supernatural powers. A long time ago, the Millennium Earl once wanted to occupy the earth. However, someone used the power of God to destroy the Millennium Earl and the world returned to peace, but the prophecy said: The Millennium Earl will come again. Now, the Millennium Earl is once again trying to dominate the world! Turn the dead soul into a demon, but the person who turns the dead soul into a demon is actually its most important person. They did not intentionally turn their souls into demons, but they were confused and believed the words of the Millennium Earl, thinking that they could resurrect the dead. However, not only could they not be resurrected, but they also turned into demons and became the weapons of the Millennium Earl... That is - "devils"! ...