Madam Cutie on Duty

TAI-SHU tries to hide away his true motive by saying that he is investigating the parallel goods trading syndicate. LAW PAK wants to help his son and he tries to carry out investigation with KA-LUN during office hours. WAN CHING learns that TAI-CHIT can repair computers and she asks him to help cracking the password of the USB memory stick. TAI-CHIT reveals to LIN-HEUNG that WAN CHING is keeping a USB memory stick. LIN-HEUNG and the others are worried and they try to get close to WAN CHING. KA-LUN reports TAI-CHIT and WAN CHING's case to TAI-SHU. TAI-SHU believes that LIN-HEUNG and WAN PAN are related. FUNG-NEI gives Mommy CHU the recovered cassette tape. She questions if Mommy CHU is the singer of "Yau Kau". LIN-HEUNG accidentally discovers that Brother SHUI is selling the supermarket's milk powder to the parallel traders. She wants to unmask him but Brother SHUI invites her to join him. LAW PAK discovers something strange from the CCTV recordings. TAI-SHU informs his supervisor and they decide to arrest them.