Clark (Theo James Theo James) worked as a street policeman for three years and was transferred to the homicide detective because of his outstanding performance. The new superior is quite dissatisfied with his promotion and assigns the nagging old detective Don (Qi Mcbride Chi McBride) to Clark as a partner. In addition to Don, of course, the group also has talented Arroyo (Kevin Alejandro Kevin Alejandro) and the only female detective Deborah (Bonnie Somerville Bonnie Somerville). Then, Clark's underage sister Agnes (Stella Maiwei Stella Maeve) is also his biggest problem. She can always think of all kinds of dangerous ways to prove that she is becoming more and more mature. There is no shortage of observational and witty Clark, but how to hold on to this position is really difficult. In a word, the road of "Golden Boy of Police" is full of twists and turns.