The Underworld – The denizens of the Underworld lived a free life amid conflict against the Heavens. There arrived a mysterious threat, a giant evil creature. This is the "God of Destruction." The eater of worlds… The Underworld is at a loss against its tremendous power. Even the mighty Great Overlord Zeabolos falls against its greatness. Near the brink of death, Zeabolos hears a mysterious voice… "Are you willing to offer your very soul to defeat it?" The moment Zeabolos agreed, he revived into a patch worked body. And thus, Zeabolos rises once again with the mysterious girl, Faust, at his side, to face Trillion. Train the Overlords as candidates to be the next Great Overlord, and to defeat the God of Destruction!