The carefree days of a happy lesbian Hong Kong couple are over when they are attacked by three drug dealers while enjoying a swim; the girls are raped and one of them is killed. Three years later, the surviving girl, now a boutique owner, accidentally runs across one of those men, and decides this is the perfect opportunity to take her revenge.

Lam Ching Ying is a Taoist wizard who goes to Thailand to help defeat a pair of black magic criminals (Billy Chow and Tsui Man Wah) using huge Taoist charms and good, old-fashioned blood of a black dog. Afterwards, "a fiendish wizard steals the bodies of the two criminals. He anoints them with the sperm of 99 satyrs and the blood collected from the menstrual flow of 99 bitches. The result is the merging of the two bodies into one ultra-powerful, bisexual creature known as the Terrific Vampire. This lustful monster gains knowledge and strength by killing and devouring the brains of victims (the first casualties are the wizard and his assistants).

Master Lam and his two disciples must battle a horde of Chinese vampires in order to get the teeth dust needed to cure an ailing general. Meanwhile, the general's wife is pregnant, and the evil spirit of an aborted baby wants to possess the unborn child's body for its resurrection.