Ysley, confident in the Idaten's supremacy, begins making moves to ensure that the demons are driven to extinction. Meanwhile, the demons send a team to take out the comparatively weaker Hayato, Paula, and Ysley.

Victory appears all but assured for the Idaten. However, they did not reckon with the mysterious Demon Lord. With both sides willing to stop at nothing to destroy each other, how will the battle of wits unfold?!