In the doomsday world, human society is invaded by high-dimensional creatures due to the opening of rifts, and the world falls into chaos and collapse. High-dimensional creatures not only wreak havoc with monsters, but also attempt to destroy the core belief of human civilization, the "principle of civilization," by alienating humans. After the government was defeated, the survivors formed a government-in-exile and the struggle continued.
The "First Dawn Squad" is composed of a group of young warriors with supernatural powers. They each experienced pain and awakening, and finally gathered together to fight to protect civilization. As the wise leader, Chu Xuan is calm and determined, leading the team on the road to counterattack high-dimensional creatures. Not only do they have to face powerful enemies, they also have to break through their own limits and evolve into more powerful beings. As they penetrate deeper into the rift, they gradually reveal the true purpose of high-dimensional creatures - to drag human civilization into darkness.