A village is being terrorized by an evil spirit called Kuyang or Nenek Grondong, which especially loves sucking blood from infants and pregnant women. That all coincides with a couple adopting a child that turns on them and becomes vicious and evil.

Treated like crap and then banished by his village, the ugly and sickly Lawar seeks shelter in a cave and is visited by a wish-granting bat spirit. Lawar's wish is to be handsome and be given supernatural abilities. He's given what he wants but must follow certain rules. Instead, Lawar uses his powers against his enemies and to seduce a young woman named Ratih. Oh yeah, and he also turns into a bloodsucking bat monster from time to time.

Lovebirds (love snakes?) Bunga the Snake Princess and Sanca the python live in a forest and transform into humans and hold erotic dance ceremonies every full moon. Some explorers stumble upon them and Sanca is accidentally shot. This incident makes Bunga sad, angry and vengeful and she begins killing everyone off.