In the spring of the third year of Tiansheng's reign, Shen Mo was promoted to the post of Prime Minister of Dali Temple due to his meritorious service in solving the case of the Eight Wise Kings. However, he was constrained by his superiors and was given the cold shoulder. At this time, murder cases occurred one after another in the capital. Most of the deceased were insiders of the Eight Wise Kings case, and the word "Guan" was left on the scene. A mysterious organization called "Guantian Pavilion" surfaced.
Shen Mo was ordered to investigate and found that the master of the Guantian Pavilion, "Tianji", was actually Chen Huai'en, the eunuch chief who faked his death and escaped. This man faked his death twenty years ago, secretly established Guantian Pavilion, and used courtiers to threaten and control him. The Panlong Society, the case of the Eight Wise Kings, and even the fate of the Queen Mother and Ding Wei were all chess games directed by him. His purpose was not to seek revenge, but to become the "uncrowned emperor" who dominated the Song Dynasty behind the scenes.
With the assistance of Han Zhang, Zeng Gongliang and others, Shen Mo broke through the main rudder of Guantian Pavilion and Chen Huai'en took action. However, before his death, he revealed that Guantian Pavilion was just a branch of the "Southern Academy" of the Liao Kingdom, and there was an even larger Liao spy network in the Song Dynasty. Shen Mo just finished a major case and had to face a new and more powerful enemy.