MUNG-YIU is almost bitten by PONG-KIT, fortunately MUNG-NAM saves her in the nick of time. However, MUNG-YIU not only feels very resentful but also blames MUNG-NAM for getting in the way. In order to create opportunity for HO NIN and LING-MUI, HO YUET and TING-SZE deliberately leave the venue. After waking up, HO NIN finds himself in LING-MUI's bed. Just as he is quite bewildered by this, he is asked by LING-MUI whether he is going to take responsibility for this. At church, WOOD-CHEUK sees MUNG-NAM, who tells him that MUNG-YIU wants to become a vampire because of him. Having invented a new weapon to shoot silver balls, LUNG-CHU comes to practise with HO NIN and TING-SZE, unexpectedly, PONG KIT is shot by a silver ball. While working together, TING-SZE notices that HO NIN behaves very strangely and keeps making mistakes the whole night……