Ho-fan again goes to the store to look for Sau-chun. Lik-kei and his chums follow him. They realize Sau-chun is Lai-yiu’s mother. Sau-chun hooks up with Cheung-lok and Ming-kwan. She wrongly thinks Ming-kwan is Chun-tung. She also scolds him for taking Lai-yiu away. Lik-kei begs Chung-ying to pretend to be Lai-yiu and ask Sau-chun about Lai-yiu’s background. Chung-ying claims she knows Sau-chun and his daughter probably have something to do with Lik-kei’s father’s death. Ho-fan has another headache and also flashbacks of being together with Sau-chun and Lai-yiu in his childhood. Sau-chun moves into Cheung-lok and Ming-kwan’s place. After Lik-kei getting his phone repaired, the chaotic evening’s clip is restored. Lik-kei accidentally embarrasses Chung-ying as he wants to use the clip to express his affectionate feelings for her. Ming-kwan settles the matter for Chung-ying. He also wants to make advances to her to benefit himself.
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.
