An internet celebrity chef named Yeung Tak Kei (Kenneth Ma) unintentionally reveals his boss’s scandal to the public and he’s forced to resign. He ends up asking for help from his maternal half-sister Chu Sau Na (Elvina Kong) and becomes a private investigator.
Chu Sau Na has one condition for agreeing to hire Yeung Tak Kei, which is to persuade “Golden Tongue Mak Sei (Louis Yuen) to join with him. Yeung Tak Kei has no choice but to keep making delicious food for this mystery man. It turns out Mak Sei used to be the legendary gourmet inspector.
After overcoming many hurdles, Mak Sei finally agrees to to join the team. At the same time, Yeung Tak Kei also gets to know a journalist with amnesia named Tong Ka Ka (Eliza Sam) and an elite street racer named Shum Oi Kiu (Priscilla Wong). The two girls each possess different skills and they also join the team as well. The four person come together forming the “Inspector Squad” solving many difficult cases.
Yeung Tak Kei has a crush on Tong Ka Ka and often visits her favorite bakery. As a result, he becomes friends with pastry chef Janice Chow Ching (Jacqueline Wong) and her shy boyfriend Cheung Kwok Wa (Oscar Leung). Yet, this leads him to the beginning of a strange case…