The action-packed and captivating tale of Dee Renjie's beginnings in the Imperial police force. His very first case, investigating reports of a sea monster terrorizing the town, reveals a sinister conspiracy of treachery and betrayal, leading to the highest reaches of the Imperial family.

Zhan Zhao is a court officer who learns of a plot to assassinate Judge Bao. While on holiday he meets a young man named Bai who turns out to be a woman. Zhan Zhao tries to recruit Bai to help him stop the assassination of Judge Bao.