Jian Fan grew up in a restaurant. He claims to be a master chef and is determined to inherit his father's business and become a "god chef". He is nicknamed "Guo Ge" by his partners. After graduating from business school, he went to the police station as an auxiliary police officer under the arrangement of his parents. He always uses cooking skills as a metaphor for everything, and gets a glimpse of the true meaning of things from the subtleties. He is lively by nature, cautious in dealing with things, quick-thinking, often plays some tricks in life, and often swings left and right in love, but the bottom line of justice in his heart has never been broken. When assisting in the investigation of a robbery case, the captain of the Criminal Police Detachment of the Municipal Bureau discovered his characteristics. After deliberate training by his master, he experienced setbacks and tests, and finally passed the civil service examination and grew into a qualified criminal policeman. He repeatedly solved major cases, and his self-confidence was a little arrogant, and he was unrestrained in his free and easy style, and he had the talent of a general. The leaders of the bureau appreciated his unique courage and entrusted him with the important task of solving an unsolved case. For the loyalty and perseverance in their hearts, Jian Fan and his comrades in the police force endured humiliation and difficulties, and fought unyieldingly and hard with the suspects, and finally solved the unsolved case. Jian Fan also made a choice about his career that he had no regrets about.