Thousands of strange stories in the world all have their origin; thousands of lonely souls whisper, each with its own reasons.
A "Declassified File" marked top secret contains twenty folk supernatural incidents that took root in the countryside and cities.
The lingering image of red clothes swirling on the river bridge, the secrets of sacrifices passed down from generation to generation in ancient temples in the mountains, the tiny cries that echo in the houses in the old streets every night... Researcher Shen Yan travels around with a film camera on his back, recording eyewitnesses' oral accounts, researching old cases in local chronicles, and unraveling seemingly unsolvable supernatural phenomena in heavy fog, long nights, and ruins.
The world is afraid of ghost stories and avoids ghosts of the dead, but they don't know that behind every strange rumor, there is a painful past that no one can remember.
When the fog rises, the soul appears, the files are settled, and a century-old regret finally receives a belated relief.
Twenty folk anecdotes are all collected, allowing you to see through the illusions of ghosts and gods to see the truth of the world buried by time.
Purpose: Ghost stories hide past events, and dead souls all have their own difficulties.