The top modern criminal investigation expert Lu Chen (28 years old, former deputy captain of the crime team, imprisoned for "manslaughter" for exposing the shady story of the police force) suddenly experienced a "consciousness time travel" in the prison and possessed the body of a 16-year-old boy with the same name and the same name as the "unauthorized apprentice" in the capital of the fictitious Daqian Dynasty.
On the surface, the Daqian Dynasty was a prosperous city that was very similar to the prosperous Tang Dynasty, but in fact, there were undercurrents: the game between the royal family and aristocratic families, the infiltration of Jianghu forces, and frequent bizarre murders. All murder scenes contained "trace evidence" (such as fibers, ballistic residues, and chemical poisons) that are unique to modern criminal investigation. Lu Chen discovered that his time travel was not accidental, and that the world was being interfered with by some kind of "future force"...
