Eighteen years after the Great Cataclysm, Chen Zhou, equipped with the mysterious [Apocalypse Survival Intelligence System], struggles to survive in a scavenger camp on the outskirts of Steelbone City. Facing oppression and exploitation within the camp, he relies on the wisdom and ruthlessness honed outside the city to rise step by step from the bottom.

Wang Ren, an orphan with no money, no house and no food, accidentally obtains the Doomsday System. With the outbreak of the biochemical crisis, he relies on the Doomsday System to step up step by step, build an immortal dynasty of survivors, fight zombies, and kill mutant creatures. When Wang Ren takes back the lost land of all mankind, he finds out that this is a conspiracy, a conspiracy of aliens to invade the earth. Should he compromise or fight back?

Reborn into the apocalypse, Jiang Nan originally planned to use the advantages of his rebirth to improve his life. However, unexpectedly, a motorhome was delivered to his door, along with a system, forcing him to save the world. Jiang Nan exclaimed: I really don't want to be a savior.