Sergeant Ko Fai completed undercover operations many years ago, and there is always a cloud hanging over him. Ko Fai is reassigned to a police precinct that is Crime Squad Station Sergeant Fong Chi-kiu’s territory. While investigating cases, the duo gradually familiarize with each other and develop tacit understanding. Chi-kiu is so dedicated to her job that she has no time for taking care of her family. Her son hangs out with the wrong crowd and gets into trouble. Hotpot restaurant lady boss Lo...