Twenty-five years ago, the globe was annihilated. With all the introduction of the Overfiend, God coming from all Gods, the human being, demon, and beast realms collapsed together in chaos. With all the promise which he could be born in 100 years to re-create his failed world, the Overfiend settled back to sleep within his mother's womb. But something has gone terribly wrong...
The actual Overfiend is born prematurely and awaits the coming of his natural the enemy, the Lord of Chaos. His only hope for survival are Amano Jyaku and his awesome sister Megumi. But destiny has moved in manners that the Overfiend could never predict, as a new race of half-breed demon beasts has developed.
As Amano travels to the kingdom of Azuma to research the look off the Lord of Chaos, he could be trapped on earth-conquering schemes of Caesar, Azuma's dictator.
Contrary to the backdrop of the demon beast slave revolt and the return of the diabolical Munhihausen, only Amano as well as the demon beast Buju can help to save the planet from another fiery destruction. With the fate of the world and its inhabitants hanging from the balance, all wait to find out what the coming of god of Chaos will bring...
