Modern forensic doctor Lin Wei traveled to Lin'an Mansion in the Song Dynasty after a car accident and became a widower's apprentice "Lin Sanniang". She used scientific autopsy methods to solve the first "drowning case" and uncovered the real murderer's mistress. However, she was involved in a series of murders. The deceased all had copper coin tattoos, which coincided with the reincarnation sacrifice conspiracy of the cult "Candle Yin". As the investigation deepens, she discovers that the case is closely related to her car accident and time travel. Professor Chen, the modern mentor, died to save her, while "Zhu Yin" wanted to sacrifice the modern soul to survive. Lin Wei transformed into an "ancient Internet celebrity" and used shadow puppetry to fight against the powerful in public opinion. She demonstrated in public forensic techniques such as lime fingerprint recognition and vinegar detoxification. The people shouted "miracle doctor", but the prime minister suppressed her. During a night visit to the underground palace of the imperial mausoleum, she discovered that the priest was actually the accused head catcher Zhao Yan (actually a puppet of a cult). She used scientific counter-kill to detonate the phosphorus powder mechanism and rescue the remnant soul of her mentor. In the end, she went to court with the fragment of the stele to conduct a live autopsy, pushed the "New Autopsy Regulations" into law, and was awarded the title of "The World's Chief Witness". However, on the night of the celebration, she discovered that a copper coin symbol appeared on the scroll of the new regulations - a new case had been quietly opened. The ultimate showdown between science and superstition has come to an end, but the shadow of the candle shadow remains, and her battlefield will remain in the world forever.
