In Chang'an, a fire broke out in the Qinglou Zuiyue Royal Academy, and the Top 1 girl, Jingyue, was burned to death. What was supposed to be an unsurprising case alarmed Yang Wenxian, the Eunuch of Shen Ce Army. Pei Jun of the Dali Temple (Court of Judicature and Revision) asked his friend Su Yannan to help investigate the case. Su discovered that there was a bigger conspiracy behind this.