►Synopsis: Ye Yuan'an, the daughter of the vice-minister of ministry of finance, encountered with the brave head constable, Zhao Lanzhi in a prostitute-killed case. They solve the case together and gradually fall in love. On the journey, Ye saves Mu Le, who lost his memories, from a bazaar. Then the stubborn Mu becomes Ye's servant and is quite loyal to her. Afterwards, Ye, Zhao and Mu cooperate closely, trying hard to deal with special cases. Infanta Minghui, the disciple of the state master, Tianqiao, falls in love with Zhao Lanzhi and threatens him to marry her with her life. Besides the secret of Mu’s identity and the chaos to be conquered, the four also have to deal with the complex relationships between them.