----One hundred thousand years ago, detective Shen Yan was shot by his most trusted colleague and fell off a cliff.
----When you open your eyes again, the world has changed beyond recognition.
----The city is powered by spiritual formations, identities are determined by spiritual records, monks are restricted by authority, and even people's souls can be recorded by the system. And he had no household registration, no history, and no files to prove his existence. He could only change his name to Shen Yan and become a "war zone deregistered person" under supervision.
----In order to survive, he was forced to follow the Ninth Spirit Investigation Bureau to investigate the case.
----The inspector died without any injuries, but his soul was completely drained; the deceased has been buried, but the authority under his name is still active; a living person stands in front of the window, but the whole city no longer recognizes his existence...
----The system records are all legal, but the conclusions of the case are contradictory.
----While everyone believed that the spirit books, soul clouds and magic circles were infallible, Shen Yan only believed in the traces left by the corpse, the habits that people could not disguise, and the motives behind lies.
----He originally thought that there was no point in tracing everything that happened a hundred thousand years ago.
----Until more and more cases began to appear, familiar shadows began to appear.
