While pregnant Lastri flees from home because her parents forces her into a marriage. Agus, her groom-to-be, is ready to accept Lastri for what she is. He wants her as his second wife. Lastri hides inside the Cave Blorong before Agus and his friends find her. Lastri refuses to return home and chooses instead to jump off from a cliff. In the sea a giant snake emerges and gets the fetus out of Lastri’s womb. The giant snake is the ruler of the Cave Blorong. He raises Lastri’s daughter. Her name is Larasati.