The Qingtong Black Killer Organization, which was once feared, terrifying and evil, disappeared due to an incident twenty years ago. No one knows their whereabouts. Some say they have collapsed, while others are about to lead to a darker world...
Many years have passed since the incident, and today, with advanced technology and rapid economic development, many deaths that cannot be explained by medicine have occurred inexplicably, and the police are at a loss what to do. In order to save more people from misfortune, high school student Ning Yifeng began to investigate, only to find that his long-lost brother turned out to be Qing Tonghei's killer? A confusing incident was also revealed layer by layer...
She, Xia Shu, was Ning Yifeng's friend from childhood to high school. A smart, pretty girl, but for him, she sneaked into the base of the Qingtong black killer organization alone...
She, Lan, is a professional killer, but she has a dream in her heart. She will do anything for love, even if it means risking her own life...
He, Xiu Yu, has a bizarre life experience. He was adopted by the Qingtong Black Killer Organization when he was in an orphanage. From then on, many people in his life became indifferent passers-by, but she...
He, Hiroshi Honda, was suspicious, cunning, and extremely jealous. He was so aloof and ruthless, but he finally felt relieved for her...
She, Ying Jurou, was an ordinary woman who had great attainments in psychology because of her love of psychology. Who knew that fate would have her, but she was used as a pawn against Qing Tonghei and entered the base of the killer organization...