In ancient China, Young Detective Dee is appointed by the Emperor to solve a series of mysterious events in the Sea Dragon's Palace.

In the Tang Dynasty, China is preparing for the coronation of Wu Zetian, the first female emperor. However, mysterious deaths occur, and Detective Dee is brought in to solve the case. With the help of a medical examiner and an albino prisoner, Detective Dee uncovers a conspiracy that threatens the emperor's reign. As he delves deeper into the investigation, Detective Dee encounters sword fights, acrobatic fights, and even a woman who can transform into a deer. With his wit and martial arts skills, Detective Dee must uncover the truth before it's too late.

In ancient China during the Tang Dynasty, Detective Dee is tasked with investigating a series of unusual events that threaten the stability of the empire. With the help of his loyal allies, Dee uncovers a plot involving sorcery, magic, and political intrigue. As the mystery deepens, Dee must navigate treacherous waters and solve the case before it's too late.