An ecological disaster known as "Grey Fog" swept across the world. The steel cities of the old civilization were reduced to ruins, and the land was occupied by mutated vegetation and ferocious aberrations. Human survivors huddled in scattered settlements, struggling to survive.
In the wasteland known as the "Rust Land", Jiang Chen, a former civilized engineer who woke up from a cryogenic sleep chamber, unexpectedly met Lin Yu, a wasteland hunter who grew up in a cruel environment. One has the technical blueprint to rekindle the fire of civilization, and the other has insight into the cruel rules of survival in the new world. In order to find the legendary "Sky Ark", a pure land uninfected by "grey fog", they decided to join forces and use Jiang Chen's knowledge to build a shelter in this dangerous gray wasteland, and rely on Lin Yu's experience to explore the unknown. They will ignite the engine of industry, open up safe farmland, unite more survivors, build the last barrier of mankind, and gradually uncover the shocking secrets hidden behind the doomsday disaster.
