Yuen (Bowie Lam Bo Yee) has left Hong Kong since he separated with coroner Yin (Flora Chan Wai Shan). Yuen does not return to Hong Kong till his elder sister, Yee (Chan Mei Kee)'s wedding. Yuen resumes duty after his return. Yuen and Yin meet again. Yin sees through Tong (Lee San San) who still loves Yuen. Thus, Yan does not show her real feeling. In order to make Yin and Yuen reunite, Tong and Yin's subordinate, Lun pretend as lovers. Yuen and Yin eventually reconcile and restore their lover relationship.

Jun (Margaret Chung Lei Kei proposes to separate with his boyfriend, Kiu (Marco Lo Man Kit). Jun has blossomed love with a model, Ming (Gabriel Harrison) after separated from Kiu. Kiu is very upset. He vents his anger by playing trick on Ming's younger sister, Ching (Chan Choi Nan). Kiu and Ching always play tricks on each other. They are friends as well as enemies.

Yin and Yuen's relationship improves a lot as they have cleared many cases together. When they have known that Tong and Lun are false lovers, they try to match Tong to a lawyer, KIT (Ellsemere Choi Chi Kin). Both Yin and Yuen never know that this match is, indeed, a death trap...