Shen Yan, the youngest judicial investigator in Dayin, is framed and sentenced to death for investigating corruption in the grain transport system. His soul falls into a phantom realm of case files, where countless unsolved cases pile up into a prison. Only by solving the old injustices of the mortal world and earning merit to cleanse his sins can he overturn the verdict in his own case.
The curse at the Qingxi Village ancestral hall, the burning of grain ships and corpses in Qinghe County... One old case after another hides behind a facade of ghosts and monsters, but behind them all are corrupt officials and an embittered people.
A cold-faced investigator, a female coroner, a wandering martial artist, and a failed scholar, four souls each bound by their own obsessions, join forces to clear each stage. Wary of one another and each harboring secrets, they follow the clues in the case files, tracing them to their source.
With every inch they dig deeper into the truth, they come one step closer to being imprisoned in the files forever.
Will this journey clear the name of the wronged, or condemn them to the case-file prison for eternity?
Theme: Clear the name of the wronged