Kei's eldest sister Sandra is a hot-tempered magazine editor and her temperament has left her single all this while. One of the family rules is that none of the siblings could get married before their eldest sister. Kei seeks help from the famous Casanova, Koo Chai, to pretend to court his eldest sister and lure her into the mood of love.
吳君如
as Chu Yu
古天樂
as Dr. Dick Cho
黃百鳴
as L
鄭中基
as Bo Yu
Ha Chun-Chau
as Mr Yu
李香琴
as Mrs Yu
郭涛
as Chu Yu's Boss
Miki Shen Li-Jun
as Mandy
姚晨
as Bucktooth Jane
蔡卓妍
as Insurance Agent
鄭麗莎
as Kuen
李怡燃
as Lynn
