Cheung-lok and Chung-ying collect Sau-chun’s old stuff. Cheung-lok simply sighs when he hears Chung-ying mentioning her mother’s death. He is then astonished when he finds out Ho-fan has managed to recall past events. Ching-ying becomes Lik-kei’s boss. He also orders investigation of the Sau-chun case to be suspended. Lik-kei arbitrarily approaches Ho-fan as he is investigating some case. Chungying installs an additional fingerprint lock at the apparel company’s office. She wants to track down the suspect who has taken Sauchun away. Meanwhile, Pikkei goes to the apparel company to look for Chungying. She admits she wants to rekindle her relationship with Likkei. The suspect is tracked down. Likkei has come to investigate. The suspect suddenly points a gun at Likkei. Chingying and his subordinates also promptly reach the scene. The suspect has taken Mingkwan and some women hostage. The gun goes off accidentally and Chingying is hit. Likkei manages to save Chung-ying in the nick of time.
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.
