The Demon lands are under attack by the human forces. They called upon a Hero to aid them in the subjugation of all demons...  When the Demon king is alerted that his people are being slaughtered by the Heroes of the human kingdom.  He goes in to a special room hidden in one of the corridors of his castle and brings forth his secret weapon. But his secret weapon isn't all that he hoped it to be. It had been rotting in the room for so long it was only a fragment of it's former glory.