Lik-kei tries to help Ho-fan retrieve lost memories by forcing him to drink. Chung-ying is furious after finding out Lik-kei’s antics. Pik-kei is requested to repay her debt. Wing-yum’s home is doused with kerosene. Pik-kei gets nervous and calls Lik-kei and asks for help. Lik-kei tells his subordinate to stand in for him and protect Ho-fan. He then wants to rush home, resulting in some baddie seizing this chance to enter the place and shoot Ho-fan, who is on the brink of death. Chung-ying gets furious as Lik-kei has done a bad job. Ho-fan then unexpectedly wants to move into Lik-kei’s home. Wing-yum is annoyed as electrical appliances and furniture are repositioned. On Lik-kei’s advice, Chung-ying investigates the incident involving some snitch in the company. She also uses the CCTV hard disk to lure the snitch into showing up. Lik-kei takes Ho-fan to the police station. Ho-fan suddenly claims he is smelling the assassin’s odor.
Because of a fatal shooting case, plain-clothes Sergeant Ko Lik-kei runs into a “dull” and “troublesome” witness called Lee Ho-fan. Lik-kei is instructed to protect Ho-fan at all times. Initially, the duo are strangers that cannot stand each other. They then gradually get along. Meanwhile, an apparel company of which Ho-fan is a major shareholder is found to have involved in illicit dealings. Yip Cheung-lok and his son Yip Ming-kwan, who are member of senior management, are associated with these activities. Lik-kei teams up with Ho-fan and Ho-fan’s younger sister Lee Chung-ying, who is a barrister by profession, to investigate. Lik-kei and Chung-ying get entangled in a relationship in the process. Also, Lik-kei’s elder sister Ko Wing-yumand Ho-fan get along sometimes and provoke each other at other times. Fate has brought the foursome together, causing a case that has remained unsolved for more than twenty years to be reopened.
