When a young witch from a remote village in northeastern Thailand travels to Bangkok in hopes of raising the money to care for her ailing grandmother, her breaking of the witch's sacred code soon leads to disaster in this frightful tale of magic from director Paul Spurrier. Dau is a young Thai/Khmer girl who studies magic in the remote forest hut where she lives with her ailing grandmother. In addition to learning the spells that will ward off evil spirits, grace her with good luck, maintain her beauty, and clear her path of rivals, Dau also learns that there are three important rules by which a witch must always abide: never eat raw meat, never pass under a clothesline, and never charge a fee for teaching magic. If these rules are ever broken, a bloodthirsty evil known as the "Phii Borb" will grow within the witch and eventually burst from her body to search for human flesh. When Dau's grandmother falls ill and the young girl is forced to travel to Bangkok and earn the money that will keep her elder in good health, she soon falls under the spell of city life and begins to misuse her powers. Soon the three rules are broken, and from Dau's body emerges an otherworldly abomination that fast takes to the streets to satisfy its horrific appetite.