The serial murders are disguised as ancient sacrifices, and the truth is trapped in a pile of incomplete files.
After a heavy rainstorm in the old city of Yanhui, many bizarre murders occurred one after another. The dead were arranged as Xuanyi sacrifices, and rumors of revenge for the dead were spread throughout the city.
Archive restorer Shen Xuwei returned to Yanhui and joined forces with detective Qin Yanchuan to investigate.
Under the layers of files, the secrets of the flood eighteen years ago were slowly revealed. The so-called sacrifice is just an artificial illusion, the evidence has been tampered with and destroyed, and insiders continue to encounter mishaps.
The clues are true and false, and there are carefully laid traps everywhere.
It was only when the dusty files came to light that we saw clearly: not all old cases can have a happy ending.
