Survivors

based in the year 2020 WW3 is happening and the U.S. was hit with a nuclear bomb, everyone had to take shelter and live underground for 200 years, but because their base is slowly being destroyed (the dirt is caving in on the concrete of the base) they had to go outside 90 years too early....
Troye, Sage, and Casey all lived in an underground civilization. but when the doors where opened to the outside... they where the only ones who the radiation didn't burn...