Two mismatched Hong Kong police detectives, Yau and Yue, were assigned to work undercover as a live-in couple to track down a serial killer accused of murdering adulterers. In the meantime, Yau (Anthony Chan) is coping with his girlfriend having left him, and Yue (Sandra Ng) is losing her boyfriend to a college girlfriend of his.
Sandra Ng Kwan-Yue
Anthony Chan Yau
Carrie Ng Ka-Lai
Alfred Cheung Kin-Ting
Jamie Luk Kim-Ming
Michael Chow Man-Kin
Woo Fung
Tam Sin-Hung
Kenneth Tsang
Lee Chung-Ling
Chow Kwok-Lun
Ng Hoi-San
Teresa Ha Ping
Eddie Chan Shu-Chi
Hui Sze-Man
Sam Kin-Sang
Leung Hak-Shun
Lee Wah-Kon