- In 2123, three months after the end of the world, Lin Nuo, the leader of the material search team, was besieged by mutant beasts to save his teammates and died. He was reborn three days before the end of the world.
- Lin Nuo woke up in the apartment. After confirming the fact of rebirth, she activated the "Doomsday Store System" - she must build a safe zone and run a store in the apocalypse.
- The initial reward of the system was an abandoned supermarket in the suburbs and three days of material reserves. Lin Nuo immediately took action and used all his savings to purchase key materials.
- On the way to the supermarket, Lin Nuo met Professor Qin, his benefactor in his previous life, who was being entangled by gangsters. He came to the rescue and warned that the end was coming, laying the groundwork for the future.
