The film tells that after the Anshi Rebellion, a series of unimaginable serial murders occurred in Chang'an City. The story of teaming up to pursue the truth
The background of the story took place after the Anshi Rebellion, the society in Chang'an City was chaotic, and serial murders happened frequently. There are school masters whose tongues were cut off, eagle guards who stabbed their ribs upside down, brothel prostitutes who were burned to charcoal, and mules and horsemen who had their eyes gouged out. Every murder has an interval of 7 days, and all the dead They were all bleeding from the heart first, until the blood flowed out and they died. What is even more horrifying is that every time a new murder occurs, someone always sees the dead of the previous murder appearing at the scene of the new show.
The legend of "Ghost Killing" was aroused for a while, making everyone panic. In the end, Shen You, the master criminal in Chang'an City, and Wei Yingwu, the Shaoqing of Dali Temple, formed the Datang version of Sherlock Holmes, and joined forces with Watson to solve the case.