In Yunhai City in the 21st century, the well-known detective Zeng San was determined to revive his agency and took over the jewelry theft case of the wealthy businessman's wife Li Mengqi. At the dinner party, he first showed his talents as a detective, but he reached a deadlock again. In a twist of fate, he encounters Lin Mei and invites her to join the gang. The two worked together to overcome many difficulties and exposed Wu Di's perjury and made him plead guilty. Zeng San and Lin Mei, burdened with mysterious pasts, are full of dedication to the detective career. They are determined to build a "Ming Zhen Institute". In this bustling and foggy city, they move forward fearlessly and relentlessly pursue the truth. They vow to create a world that belongs to them and interpret a touching detective legend.
