YING-HUNG and the others visit the WU's family again. Master WU asks YING-HUNG not to continue his investigation. YING-HUNG questions him and Master WU finally reveals that he has got a letter from the kidnapper. YAT-CHIN reveals that he has got a headache all the time and he always have strange dreams that he cannot sleep well. FOON HEI helps him and YAT-CHIN can fall asleep eventually. YING-HUNG and the others discover that AH-MING owes a big debt. They also discover that WU DIP has been engaged for four times. YAT-CHIN goes to Kau Lau Village to look for AH-CHUM. He wants him to check if WU DIP is around and he offers him the rewards from YING-HUNG. YAT-CHIN looks for TIN-BONG and TIN-BONG recognizes WU DIP immediately from the picture. YAT-CHIN says that he is having hair suddenly and he believes that this is related to TIN-BONG's scar. YAT-CHIN reveals that he has become sworn brother and sister with FOON HEI because of WU DIP.… ...