On a rainy night in Tianjing City, Zhou Xian, the head of the Ministry of Etiquette, died suddenly and mysteriously in a secret room. His body was as black as coal but showed no trace of burning. Jinyi Guardsman Shen Mo was forced to take this hot potato by his superiors. He wanted to deal with it perfunctorily, but he bumped into Su Qingyan, a self-proclaimed "folk forensic doctor" - this girl rushed into the scene of the crime with autopsy tools, just like a ruthless person who rushed into the Hongmen Banquet with spicy sticks.
One was a ruffian captain who was just messing around, and the other was a vicious-tongued medical woman who was scolding the heavens and the earth. The two people who were forced to team up to investigate the case soon discovered that Zhou Xian's death was just the tip of the iceberg. From a shadow puppet that can move on its own to a bronze tortoise shell that can predict death, a series of mysterious cases have thrown the entire Tianjing into chaos. When Shen Mo's embroidered spring knife faced Su Qingyan's scalpel, he discovered that behind these piles, there was a shocking secret that could overturn the court.
