Genius profiler Li Chenxuan made a fatal mistake that led to the tragic death of his partner, and he was marked by the criminal organization "Darknet". In order to atone for his sins and survive, he was forced to form a temporary partner with Tian Ziqing, a policewoman who hated him, to pursue a series of imitation murders controlled by the "dark web". However, they gradually discovered that the details of each case accurately pointed to Li Chenxuan's deepest secrets and fears.
