During the Yongle period of the Ming Dynasty, strange things happened frequently in Shuntian Prefecture in the capital. One after another seemingly unrelated bizarre cases were staged one after another, and there seemed to be a huge conspiracy hidden behind them. Shen Mo, the rising star of Jinyiwei, relies on his keen observation and strong logical reasoning ability, and repeatedly encounters obstacles during the investigation process. By chance, he met Su Qingyuan, a folk woman who was proficient in pharmacology and good at finding clues from details. The two have very different personalities. One is strict and rigid and follows the rules, while the other is quirky and eclectic. However, in the process of working together to investigate the case, they gradually form a tacit understanding. Starting from the corpse of a wealthy businessman who died mysteriously, they investigated in depth step by step, uncovering layers of fog. Not only did they have to face the complex truth of the case, but they also had to deal with threats from the dark. In the process, they witnessed the good and evil of human nature, and strengthened their determination to pursue the truth through life and death tests. They finally brought the mastermind behind the scenes to justice and protected the tranquility of the capital.
