In the year 2047, spiritual energy revived, and the city turned into a ghost cemetery at night. Chen Mo, a scavenger who was once a supermarket tally clerk, awakened the ability of "simulation deduction". He thought that the script of life was to stock up on goods, build infrastructure, build a business empire on the ruins, and rub the rules of ghost stories on the ground. Until a late-night deduction, he witnessed his own death - being strangled to death by his own reflection in the mirror in a safe house. In order to survive, Chen Mo frantically stocked up on goods, modified defenses, and even exploited loopholes in the rules to harvest strange items in reverse. He thought he was sure of victory, but deduction showed that his fate was deeply bound to a "natural enemy": unless the opponent died, he would not survive. When the forces in the safe zone began to study the "artificial rules", and when the strange creature in the deduction opened his eyes, Chen Mo realized that in this crazy city, the biggest resource was not materials, but the enemy who shared his heartbeat. Tonight, he must make a choice: kill half of his life, or join forces with the monster and become the new rule itself.