An anthropologist named Cathy travels to Bali with her lover to conduct research on black magic. There, they encounter the queen of the Leák cult, a shapeshifting witch who feasts on blood and soon makes Cathy carry out her evil deeds.
Mystics in Bali, also released as Leák and Balinese Mystic, is a 1981 Indonesian supernatural horror film directed by Tjut Djalil. Based on the novel Leák Ngakak by Putra Mada, the film stars Ilona Agathe Bastian, Yos Santo, Sofia W.D., and W.D. Mochtar.