Mei Shiqi, a senior hidden guard of the Yu State, teamed up with Leng Moyan, Si Cheng of the Investigation Department, to uncover a series of cases endangering the country through overt and covert investigations, and finally determined the story of the love of his life.

The heroine Mei Shiqi in the play is an independent working woman with self-respect, self-reliance, and self-improvement. She is determined to strive for career success and the freedom of marriage through her own efforts.In order to solve a series of bizarre mysteries, she and Leng Moyan experienced many battles of wits and courage, interpreting a youthful and inspiring detective love story.