Shen Yanqiu, the ace detective of the Central Patrol Office of the Republic of China, accidentally traveled to the Jinghe period of the Dayin Dynasty during the investigation of a cultural relic theft case involving a "time and space rift", and possessed the son of a down-and-out widower who had just been silenced. Using modern criminal investigation logic, trace examination, and autopsy knowledge as an edge, in the ancient times of "low-class crime and chaotic prisons", we solved a series of strange cases, gradually got involved in the conspiracy of the court and the truth of time and space, and finally made a choice between "going back" and "staying".
