Chen Xu is an ordinary courier, but he has demon blood sleeping in his body. In modern cities, people with supernatural powers hide among ordinary people, maintaining a fragile balance. Chen Xu awakened his ability in an accident - he could see the dark side of others' hearts and manipulate them, at the cost of his own sanity being constantly eroded. When his former friend Lin Ye turned completely dark due to betrayal and began to hunt all people with powers, Chen Xu was forced to get involved in this invisible war. Lin Ye has the ability to "manifest fear" and can turn any fear into a physical weapon. The two have turned from close friends into rivals, and every confrontation is a game of IQ and psychology. Chen Xu must use the devil's golden finger - devouring the darkness of others to strengthen himself, while at the same time curbing the rampant beastiality in his heart. He jumped repeatedly between hunter and prey, using strategy rather than brute force to fight against Lin Ye's terrifying army. As the truth emerged, Chen Xu discovered that the source of his and Lin Ye's darkness actually came from the same conspiracy organization. He will act as a demon, do the things of a madman, and make his own way in the maze of lies and betrayal.
