In this world, people have modern technology, but they live a life similar to ancient times.
Originally, due to human destruction of nature, rising global temperatures, volcanic eruptions, factory explosions and other reasons caused 4 billion people to suffer misfortunes overnight and their lives were lost.
The remaining humans also realized their mistake and planned to build underground bases and wait until the surface temperature dropped before returning to the surface.
Generation after generation passed in the underground base, and finally the day came.
Ren Xi is responsible for the planned return to the surface world. Ren Xi is the person in charge of this operation and a colonel in the underground world. He is famous and has outstanding strength. Because of this, people in the underground world are rushing to participate in this operation.
Jiang Shen, who originally wanted to protect his younger brother, participated in the selection, but due to an unexpected conflict with Ren Xi, he joined Ren Xi's team. During the execution of their mission, the two also discovered some unknown secrets of the headquarters, but this also made them a thorn in the headquarters' side.
In the end, the two work together to fight against the enemy and overcome difficulties.
Intention: Don't wait for that day, caring for the environment can actually become a human thought!