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.

• Huayi Brothers Pictures
• China Film Co-Production Corp.
• Mark Chao
• AngelaBaby
• William Feng
• Kim Bum
• Carina Lau
• Chen Kun
• Chien Sheng
• Lin Gengxin