In the light year of 302,000 years, there was a great crisis between the heaven and the demon world. The riots in the double demon world caused a war between the heaven and the demon world. In order to leave a way out and revive after the war, the reincarnation angels of the archangel Gabriel and the reincarnation demons of the devil Lucifer were sent to the lower world, and envoys were sent to accompany them.