The main line of the story revolves around the newly promoted captain of Jinlin Guards Wu Xingyu (played by Mu Leen) and the silver hairpin maker Huajianjiu (played by Yu Xuanchen).Not long after the two got married, a murder occurred in the capital.While Wu Xingyu was investigating the case, she was shocked to find that the notorious murderer in the world was her beloved husband and Huajianjiu, the enemy who killed her father.Faced with the intertwining of love and justice, lies and truth, Wu Xingyu and Huajianjiu, an originally loving couple, fell into deep conflicts and entanglements.

A cat-and-mouse game full of excitement and suspense unfolds, making people want to stop.