Kiki (Chrissie Chau), a sexy and charming OL, will be married to hr cop boyfriend Sean (Him Law) in a week. During the hen night, Kiki encounters a handsome photographer named Jack (Z.O.) and falls head over heels for him. The half drunk Kiki cannot resist having a one-night stand with him. At the same night, Sean encounters a girl named Bobo (Carol Yeung) during the night when he and his colleagues go to nightclub on a police operation. She offers him sex as a means to thank Sean for his generosity. The next day, Bobo forwards a proposal to be his girlfriend for 3 days with no strings attached and disappears affer his wedding. Can Kiki and Sean resist the temptation to have a last fling before their marriage? How will that affect their love and marriage?