Sea water intrusion, animals and plants mutate, breathing air that kills for more than five minutes, the sun that instantly roasts people into mummies... A hundred years ago, humans had to move underground in order to survive.
One hundred years have passed, and violent movements have occurred in the earth's crust. Scientists speculate that in another fifty years, the underground will no longer be suitable for human habitation. For this reason, the "return to the surface" plan has to be launched.
The whole text has been changed, so please read it from the beginning (@^_^@)~
Intention: