YAN discovers that SHUI is going to Shenzhen. WAN Sir and VINCY ask YUE out for dinner. MING assigns KIT and KA to handle a case with the Customs and Excise Department. They successfully capture seven smugglers and find a girl called SUET YEE at the drains. SHUI appears at Lo Wu Control Point in untidy clothes. YEE brings her home. FUNG is enraged and he rushes to YEE's place to take SHUI home but YEE scolds him angrily. FUNG cares about her sister alot and he persuades YAN to take good care of SING. FUNG apologizes to YEE. HIM arrives to find that FUNG and YEE are talking happily. Together with a staff from the Social Welfare Department, KIT brings SUET YEE back to her father's place. They finds SUET YEE's mother CHU in the house and CHU has been overstaying in Hong Kong for a while already. KIT and KEI prepare documents for CHU overnight in order to arrange special permit for her to stay longer in Hong Kong……