During the Yuanfeng period of the Northern Song Dynasty, undercurrents surged under the prosperity of Bianjing, and strange cases occurred one after another. Shen Yanzhi, the judge of Dali Temple, comes from a scholarly family and is well versed in legal reasoning, but because of an old case, he is obsessed with it and decides the case calmly and almost harshly; Su Wanqing, a widow in the market, inherited her father's unique skills and is proficient in autopsy, injury identification, pharmacology and toxicology. Although she is a woman, she has established herself in the prison industry with her skills and her valiant temperament.
A serial murder case in a brothel tied two people who had no intersection together. Shen Yanzhi attaches great importance to the logic file, and Su Wanqing believes in the body and proves it. From the initial conflict of ideas and mutual testing, to the later tacit partnership and sharing life and death. They traveled through the streets of Biandu and went deep into the water towns of the south of the Yangtze River to uncover the murders in brothels, the mystery of water transportation, the mysterious shadows in the examination hall, and the remains of the old dynasty... Every autopsy is a dialogue with the deceased, and every reasoning is towards the truth.
While they were unraveling the strange case, the two were also involved in the whirlpool of intrigues in the court. The mysteries of the old case were gradually revealed. Shen Yanzhi's family past and the mystery of Su Wanqing's life experience were all connected to the shocking conspiracy. Using their bones as evidence and their hearts as lamps, they stood firm between legal principles and human feelings, justice and power, and finally cleared away their grievances and restored clarity to the world. They also harvested each other's sincerity amidst the shadows of swords and clues.
