Psychological profiler Shen Zhao returns to the crime scene and joins forces with idealistic detective Lin Ji to track down a serial murder case that mimics an old case ten years ago. Forensic doctor Zhou Yanqiu's silence, hacker Huo Yan's lurking, reporter Chen Zhiwei's fanning the flames, and psychiatrist Bai Yu's calm observation have woven into an invisible web. When every 'accomplice' thinks he is saving the world, who is the real prey? Shen Zhao must tear open his own wounds, and Lin Ji will face: Does redeeming criminals mean condoning death?
