Kei's eldest sister Yu Chu is a hot-tempered magazine editor and her temperament has left her single all this while. They have a traditional family and one of the rules is that none of the siblings could get married before their eldest sister. In view of this, Kei sort help from the famous "Casanova", Koo Chai, who is the new journalist in Sandra’s firm to pretend to court his eldest sister and lure her into the mood of love. With Sandra falling in love with Koo Chai, she decides to introduce him to her parents. However, Koo Chai fell in love with another girl, Mun during an assignment and this broke Sandra’s heart. To avoid the disappointment of her parents, Sandra asks Mr. Wong a private investigator to pretend as her boyfriend. With Sandra love life going nowhere and her career plunging low, will she get what she wants? Will Kei find his true love and marries her sister off? Who will Koo Chai choose? Will all well end well?