God has vanished, and the angels in Heaven believe humanity is to blame.
They believe that humanity's insatiable desires and wanton destruction of the world have finally made God lose faith in mankind. So He abandoned them and the Earth. The angels then declared war on humanity. Led by the archangel Sariel, they launched an apocalyptic war, intending to wipe out humanity completely and prove themselves.
Some high-ranking angels refused to be drawn into the conflict. But some lower-ranking angels, along with newly born angelic spirits who had just gained consciousness, chose to follow Sariel and carry out his grand "plan to destroy the world."
The newborn angelic spirits have no bodies. Unlike the lower-ranking angels, they have not yet taken physical form, so their first strategy is to seize human bodies as vessels for their descent into the mortal world. Fortunately, the archangel Michael chooses to side with humanity, and with his help, the survivors are able to fight back.
