The father of Ruthai is in debt with the main guy Lin Lang Sur who is a well known member of the Hongkong mafia. As the ugly duckling of the family Ruthai is a very intelligent student but cannot compare with her sister’s beautiful looks. Lin Lang Sur decides to accept her sister as a payback for the high debts of her family but when the girl’s father learns of this plan he decides to run away with his daughters. But the Ruthai has to return home in the last minute to fetch something that she had forgotten there and she’s immediately catched by Lin Lang Sur’s gang and brought to his mansion. Seeing that this is not the beautiful sister that he planned to catch Lin Lang Sur decides to make Ruthai a servant in his house but eventually he falls in love with her.