There is a line of extremely high-level civilizations on the earth, hidden and accompanying the species that currently dominate the surface. It has split mountains and created seas, moved stars and changed moons, and has resisted threats from the universe many times. When danger comes, it appears like gods. When the danger passes, it returns to silence, leaving only traces in legends and religions. This time it comes to the world again to eliminate disasters, but it is entangled with the social concepts of human civilization and the emotions of ordinary people, and the contradictions emerge. These contradictions and stories of salvation make up this book.