Strange cases of "burning people into glass" occurred one after another in Chang'an City. The deceased were instantly incinerated by high temperatures, but glass-like crystals and strange symbols were left behind. Shen Lang, the judge of Dali Temple, relied on his photographic memory and extreme control of details ("Human Flesh File") to peel off details such as the composition of the glass and the daily trajectory of the deceased. At the same time, when Yueyue, a female official of the Taishi Bureau, was observing the sky at night, she was shocked to see that the Ziweiyuan star, which represented the emperor and the destiny of the country, was dim, and several evil stars formed a "greedy wolf eating the sun" killing pattern. The direction of its star position actually coincided with the scene of the murder and the direction of the Dragon Veins of the Tang Dynasty.
The two met because of the intersection of investigation files and star maps. From mutual suspicion to being forced to cooperate. They discovered that these murders were not isolated murders, but a mysterious organization called "Guixu", which was systematically destroying the national destiny of the Tang Dynasty through blood sacrifice and the art of smuggling, with the intention of causing turmoil and subverting the Li Tang Dynasty. Shen Lang's "microscopic eye" is responsible for deciphering specific conspiracies and mechanisms, while Yueyue's "macroscopic image" is responsible for interpreting the movement of heavenly energy behind them. The two of them, inside and outside, dealt with the turbulent court struggles (such as Li Linfu and An Lushan's forces secretly disrupting the situation) and the bizarre secrets of the rivers and lakes. They finally uncovered the shocking secrets related to the "Guixu" organization and a concealed secret of the previous dynasty, as well as the origin of Yueyue's special family, and jointly defeated this constellation murderous plan that attempted to "fall" the prosperous Tang Dynasty in advance.