Long ago in the beginning of the universe, Spirits and Demons battled over the power of the Mortal Realm. This war resulted in 5 Demons entering the Mortal Realm itself to wreak havoc in our universe. The only way for them to do so was by possessing the soul of a mortal being. Over the course of cosmic history these demons have possessed countless victims, harming planets across the cosmos. Eventually, these demons decide they want to destroy the universe from the inside. They come up with a great scheme to meet this wretched goal. By this time however, 5 Spirits enter the Mortal Realm to stop the demons from ending the universe.