In the doomsday wasteland, {Ling Chen} awakens with the "Destiny Detective System", which can detect cause and effect, restore the truth, and vows to change the fate of being abandoned by the sect and dying due to the collapse of the law. He meets Su Qingyue who has returned from rebirth. She holds fragments of the future and knows the sect's conspiracy and loopholes in the rules. When the two teamed up to investigate the "resource theft case", they were surrounded by Su Qingyue's predatory ex-boyfriend, Ling Chen's dark mirror image, and sect disciples who were jealous of Ling Chen's talent. Ling Chen used the system to break the situation, and Su Qingyue relied on her rebirth memory to avoid trouble. During the detective puzzle solving and the sect competition, she gradually uncovered the truth about the collapse of the law, and finally reshaped the law of heaven and earth and gave the wasteland a new life!
