In the thirteenth year of Yongle, turmoil arises in the southern border of the Ming Dynasty. Various factions possessing supernatural abilities stir up the situation in Jiaozhi, local forces secretly plot trouble, and epidemic mutation crises follow one after another. Lin Chuan and his partners strive to quell the unrest and resolve the supernatural threat. After returning to Beijing, they discover that a major corrupt case is hidden in Shandong. Zhu Di and his entourage disguise themselves as an opera troupe to secretly visit the locality, witness the hardships of the people, gradually uncover the entanglement between officials and the public as well as the undercurrents of sects, and prepare to deeply dig into the heavy conspiracies behind them.