Kidnapping. Pei Lan, a young talented movie star, disappeared while on a date with her boyfriend. The girl went to the restroom and did not return, and after a while the relatives were sent a ransom demand and a videotape that could destroy not only the career, but also the life of Pei Lan... Murder. While Fang Mu uses his talents as a profiler to save Pei Lan, the unthinkable happens: Deputy Commissioner of the Department of Public Security Xing Zhisen is accused of murdering an unarmed man. Xing Zhisen insists that shortly before this the murdered man stabbed a young woman, but no evidence of his version can be found. As are the bodies of the deceased. All the evidence is against him. A death sentence is a matter of time. An invisible connection. Not wanting to put up with injustice, Fan Mu undertakes to prove his old friend’s innocence. He finds out: the murdered woman existed. Moreover: she knew Pei Lan...