Synopsis：In the first year of the Chui Gong reign, Wu Zetian led hundreds of officials on a night patrol of the Grand Canal. With the streets of Luoyang deserted, they headed to Longmen to catch a glimpse of the holy statue. However, a dragon-like beast crashed into their dragon boat in the canal, causing widespread rumors and fear among the people of Luoyang. Wu Zetian, furious about the incident, urgently summoned Detective Dee to investigate the case of the dragon king in the canal. The whole city of Luoyang was filled with fear and rumors. Detective Dee, tasked with the dangerous mission, used his unique intelligence and charisma, defied authority, fearlessly faced gods and demons, and overcame temptations to unravel the truth and reveal the real culprit.