In order to get closer to PONG KIT, LING-MUI wants HO NIN to teach her martial arts. WOOD-CHEUK and MUNG-NAM arrive at the castle only to find out that the spring has dried up, and it turns out that YING-TIN beats them to it, and he even attempts to catch MUNG-NAM and bring her back for experiments so as to find a way to cure PONG KIT. To encourage MUNG-NAM, WOOD-CHEUK brings her back to her old residence to spend some romantic time together, but MUNG-NAM indicates that the vampires and the immortals are sworn enemies, leaving WOOD-CHEUK no other choice but to let her go. While PONG KIT and HO NIN are practising martial arts together, three vampires burst into the house to besiege and attack HO NIN. On the other hand, MUNG-YIU goes to have a word with WING-YEE, asking her how she can stay young forever……