Modern forensic doctor Lu Changfeng accidentally traveled through the Northern Song Dynasty and became a lowly county government clerk. As soon as he traveled through time, he received a life-threatening note left by an unknown corpse. On the night of the county magistrate's birthday party, nine people in his family died of mysterious poisoning. He was framed and framed. He relied on his professional autopsy knowledge to clear the suspicion and uncovered the three brothers and sisters of the Yu family who were responsible for the destruction of their family. Subsequently, a series of strange cases such as the scholar's suspended animation and the frozen corpse of the Southern Tang Dynasty hidden in the ice stream were solved one after another. While handling the case, he met Shen Qingtang, a young minister from Dali Temple who was upright and highly skilled in martial arts. He also accepted Mu Duoduo, an orphan girl who was good at portraits, as his assistant. Behind each murderous case, there are secrets of the jade seal of the previous dynasty and old grudges from troubled times.
