In the seventh year of the Apocalypse, strange crimes occurred frequently in the capital, and "future relics" that should not exist appeared one after another in the depths of the prison - luminous metal pieces, black boxes engraved with strange symbols, and crystal mirrors that could reflect human figures. Zhou Yanchuan, a member of the Jinyiwei family, has a gentle appearance and restrained behavior. He is known as the "warm knife in prison" and is best at leaving a ray of human kindness in the bloody storm. During an investigation, he accidentally activated the mysterious golden finger "Star Prison File", which can read incomplete information by contacting abnormal objects and deduce the truth of the case. However, he was also involved in a shocking conspiracy that spanned the court, the border army, the Ministry of Industry and the core of imperial power.
On the surface, he is investigating bizarre murders, missing craftsmen and palace secrets; in fact, he is step by step coming into contact with a secret organization that does not belong to this era. Those traces from the "future" are embedded in the history of the Ming Dynasty like nails, quietly changing the fate of many people. Zhou Yanchuan met a group of companions in the light of swords and shadows, supported and protected each other on a daily basis, and guarded the hearts and bottom line of many puzzles. When the truth gradually emerged, a storm was about to arise in the capital, and he also discovered that he might not be a simple investigator, but a key link in a huge game.
