MA CHONG and CHI-SHING discover some graffiti in the male toilet saying that YIM KAN has impaired kidneys. YIM KAN is enraged and he insists to find the originator. CHI-SHING discovers a hidden camera video on the Internet and the one who wrote the graffiti is the cleaning lady Sister SIM. MEI-KEI says that the building management office has fired Sister SIM immediately. MA CHONG suspects that the one who uploaded the video is LUI MO and LUI MO admits it. LUI MO believes that he can put people to trial but TAK-YU blames LUI MO for bullying others on the Internet. The guys discover that someone called “Angry Egg Tart” has uploaded many hidden camera video of HEUNG-CHING on the Internet and he has posted HEUNG-CHING’s personal information as well. HEUNG-CHING is worried about her personal safety but MA CHONG and YIM KAN ask her to ignore it……