 Throughout the world, there are ten Angels and ten Demons with amazing powers, some of which are sealed within humans.They are being searched for by the Stea Government (Angels) and the Zenom Syndicate (Demons) who want to insert them within the Kabbalah and Reverse Kabbalah, that are found on the North and South Pole respectively.A legend tells that when either Kabbalah is filled, a super weapon called the Legendary O-Part will be awoken.