After the turmoil of the fox demon seducing the scholars subsided, the city of God returned to its former prosperity and bustle. Empress Wu was in a good mood and decided to hold a grand autumn hunt, inviting princes, nobles and people who were good at martial arts to gather together to compete on horseback and archery. Murong Ji, the young Khan of Tuyuhun, was also invited to participate in the autumn hunt, but accidentally became a "suspect" in a conspiracy to assassinate the empress. Murong Ji had no choice but to ask Pei Kun for help, hoping that he could help find the real murderer and clear his name. In order to protect the peace of the Tang Dynasty and the people, and to help his friends, Pei Kun, Yuchi Zhu, Han Dongqing and other partners once again joined forces to investigate the case. There were constant dangers and jokes along the way, and finally the real culprit who planned to assassinate Empress Wu was tracked down, and a fight between the Tang Dynasty and Tuyuhun was prevented. war between