In the wasteland world after the future world war, the spoiled heroine Lin Shutong accidentally activates the "get something for nothing system" - lying down to sleep, breathing every day, or even just finding a broken wall to sign in, you can get energy or supernatural props. She originally wanted to eat and wait for death, but she was involved in a dispute between the wasteland forces because of the "mandatory check-in points" frequently triggered by the system; the autistic male patron Gu Shenzhou is a former genetic researcher at the Zhan Zhan Institute, who lost his ability to perceive emotions due to an experimental accident. In the process of tracking the source of the system, the two gradually uncovered the truth about the "Human Genetic Contamination Plan" hidden in the world war, and all those with awakened powers are just "energy batteries" in captivity... A strong line of suspense runs throughout: Why did the system choose the bad heroine? What is the connection between the male protagonist's genetic experiment and the system? Is the "City of Light" deep in the wasteland a refuge or a prison?
