In the end of the modern world, the "Black Rain" virus breaks out, humans mutate into zombies, animals and plants become alienated, and society collapses. The invisible rich man disguises himself as Chu Fan, the male protagonist who runs a street vendor. He awakens the "disaster/doomsday survival system" and enters unlimited dungeons (abandoned cities, virus laboratories, snow fortresses, etc.). Through the system, he collects materials, strengthens himself, forms a team, and defeats the dungeon BOSS to obtain rewards. At the same time, establish a base in the real apocalypse to fight against mutated creatures and villains, uncover the truth that the "Black Rain" virus is an experiment of a mysterious organization, and finally use the system to mobilize global supplies, spread virus antibodies, and lead mankind into a new era.
