Isaku Honjo is a cold-blooded prosecutor who will judge criminals even if it means fabricating evidence.

One day, he loses his life along with his wife and daughter in an unexpected accident and falls into Hell.

There, the demons were holding the ｢Millennium Festival｣.

The demon Bune sets his sights on Isaku as a 「Devil’s Proxy」 to participate and offers him a contract.

If you participate in the Millennium Festival and obtain the legendary Ring of Solomon, any wish will be granted.

Not only you, but your family can be resurrected… or so he says.

Having signed the contract, Isaku throws himself into the Millennium Festival as Bune’s proxy, wielding the sword of judgment against the demons.

Will he truly be able to obtain the Ring of Solomon――?

A man who once wielded great power as a prosecutor now passes judgment on demons in this ultimate dark fantasy.