STELLA has suddenly collapsed in the street. SING sends her to a clinic immediately and she is later diagnosed with severe allergic asthma. LAM and NGO pick a quarrel again. FAT is so annoyed that he decides to move to his vegetable garden. FAT offers HEI some advice on pest control, which irks him a bit nevertheless. PO goes to volunteer for YUE’s environmental protection group while PLANE BOY manages to attract media attention for the campaign organized by YUE and her friends. YUE and her friends have gathered outside YIU’s office building. YIU needs WAI to drive the crowd away as soon as he has returned to the office building. SING tries to stop WAI and YIU reveals that YUE is in fact his biological sister. YIU’s girlfriend CHI-CHING decides to stay in Hong Kong and set up a pet shop of her own.… ...