In the third year of Tianbao, Shen Du, the judge of Dali Temple, was ordered to investigate a bizarre "glazed corpse" murder case in Guangdefang. The deceased was incinerated into a glass shape, and the twenty-eight constellation symbol "heart" was left on the scene. Shen Du discovered that this case was not an isolated case. In recent years, many murder cases with similar techniques and different identities of the deceased had quietly occurred in various places in Chang'an, and the locations vaguely corresponded to the stars in the sky. With the help of Yue Wan, a female official from the Taishi Bureau, they deciphered that the murderer was killing people in Chang'an 108 according to the position and order of the twenty-eight constellations. His purpose was not a simple vendetta, but to use the earth connections and popularity corresponding to the squares and constellations to activate an ancient strange formation called the "Dragon Locking Formation" to swallow up the dragon veins of the Tang Dynasty and the national destiny. The investigation involved the two men in the whirlpool of the dispute between Prince Li Heng and Prime Minister Li Linfu, and also led to the secret Taoist sect "Tiangang Dao" that had been hiding for thousands of years and intended to overthrow Li Tang. As key nodes such as "Dangerous Place" and "Room Stay" were illuminated, Shen Du was shocked to find that the most trusted ally around him might be the most critical "hidden piece" in this chess game. In the end, he must find the real chess player before the countdown ends, and place a chess piece on the chessboard of thousands of squares that can change his destiny.
