Seventy years ago, the earth was in danger of running out of fuel due to excessive development.
Just when it was about to collapse, a natural disaster suddenly struck the world without warning. In the flames of the war, a group of alien species calling themselves "Blue Stars" suddenly appeared and slaughtered humans.
At the same moment, the demise of the earth temporarily stopped for no apparent reason.
Facing the invaders, human beings rose up to resist, but were still defeated, and were finally forced to the border areas of the earth.
After people retreated to the border, "Blue Star" also stopped taking action without any reason.
However, whenever humans want to get closer to the "center" again, the "Blue Star" will appear again without warning.
Invaders in the eyes of humans. In their eyes, what is humans and what position they are in.
Can mankind take back this blue sky again and bathe in the sunshine...
Concept: Man and nature