Dee, the detective serving Chinese empress Wu Zetian, is called upon to investigate a series of strange events in Loyang, including the appearance of mysterious warriors wearing Chiyou ghost masks, foxes that speak human language and the pillar sculptures in the palace coming alive.
Young Dee Renjie arrives in the empire's capital to join the Supreme Court as police judge of his region. He wants to become a prosecutor. Empress Wu, who is at the beginning of her reign, has commissioned the fierce detective Yuchi to investigate a sea monster that stalks the city at night and makes it unsafe.
In the years after the Revolution, China broken up into fiefdoms held by warlords, who are busy fighting each other. One warlord has imprisoned a girl and wants her to be his seventh wife, but he's too honorable to force her. The local revolutionaries wants to kill him and bring back the republic. But when a stranger returns from abroad with mastery of magic to recover the girl he loved, who is tricking whom and who will win at the end?
In 1905, revolutionist Sun Yat-Sen visits Hong Kong to discuss plans with Tongmenghui members to overthrow the Qing dynasty. But when they find out that assassins have been sent to kill him, they assemble a group of protectors to prevent any attacks.