During the prosperous Tang Dynasty, a strange detective organization emerged in Chang'an City...
The story begins with an unsolved case in Wucheng. Zhang Mengqing, a lively and out-of-the-box rookie detective, volunteered to investigate the case, but met two "enemies": the cold-faced and poisonous Prison Department Shaoqing Yang Huaiyu, and the romantic court official Fan Zhiyi. The three of them would never know each other without fighting. One investigates a case like a desperate Sanniang, one solves a case like the King of Hell and a ghost, and the other performs an autopsy and makes jokes, forming the "Iron Triangle" of Wucheng's case-solving.
From the case of Mr. Zhao to the serial murder case, the three of them were in a state of turmoil. Yang Huaiyu always thought that Zhang Mengqing was reckless, but he always told her the truth; Fan Zhiyi laughed at her as "little swallow is in court" and turned around to search the graves with her to find evidence. As the case deepens, the truth gradually emerges. What kind of sparks will these three people create?
Mission: Unity is strength