YAN's son, TAI YUNG, returns from France without finishing his studies. He has learnt some Western kung fu and attacks KAN and LOY for his father.

YI takes good care of KAN and LOY. They gradually love her but they dare not express their love towards her.

LOY finds that KAN pursues YI secretly and quarrels with KAN. However, they do not want to have their friendship destroyed because of this. They therefore agree to pursue YI in probable ways.

'Here is a young girl, CHAU SIU KUEN, who wants to sell herself in order to repay the debt and bury her father. However, since she is too dirty, no one would like to pay the price.

SIU KUEN has no other method but to commit suicide. She is saved by KAN and LOY and is accepted by LAN to live on the brothel boat temporarily.