Cubic: Nee Hua Jai Tee Mai Dai Kor (2014)

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The father of Ruthainark is in debt with a man called Lin Lang Ser who is a well known member of the Hong Kong mafia. As the ugly duckling of the family Ruthainark is a very intelligent student but cannot compare with her sister's beautiful looks. Lin Lang Ser decides to accept her sister as a payback for the high debts of her family, but when the day comes to pay the debt the girl's father decides to run away with his eldest daughter. As a result of this Ruthainark is captured by Lin Lan Ser's men and brought to his mansion.