YEUNG carries out investigation on CHIT. He discovers that his cousin TAM BUN is a computer expert graduated from the Massachusetts Institute of Technology and CHIT plans to steal KIT's blood diamond. CHIT and his team go to Zhuhai to steal the blood diamond but they fail to succeed. CHIT meets YUNG and MARBLE at Zhuhai's hotel accidentally. YAN locks HOI and NA in a hotel room so that they could carry out their stealing plan without interference. While TSEUNG and the others try to steal the blood diamond, the fire alarm is on suddenly. It was HOI who causes the fire alarm in order to escape from the room. Before passing through the customs, KIT pretends that he is not feeling well and he asks YUNG to pass through the customs alone. CHIT knows that KIT has put the blood diamond in YUNG's pocket and he tries to call her to remind her but YUNG doesn't answer the phone. CHIT tries to talk to YUNG and steals her blood diamond tactfully. YAN pretends that he is sick and CHIT seizes the chance to get rid of the diamond on time. From this incident, YEUNG confirms the true identities of CHIT's mob. YUNG returns to Hong Kong and she reveals to LEI that CHIT has fallen in love with her. Later, they discover that they have made a mistake about CHIT's feelings.