Not to be confused with Devil Sorcery, which was made around the same time, has some of the same actors, and a similar story.
A young couple listen to the advice of their uncle, a taoist priest. He gives them a long (and totally inscrutable) spiel, possibly about avoiding demons, though it's hard to tell. Then the young man, Chan Che, takes a business trip to Bangkok, where he bumps into lovely Thai girl Chuma, who just happens to be a witch, and the daughter of a wizard. She casts a spell on Che, so that he'll love her. Che returns to HK and his wife, and he starts to act strangely. Through her evil statue-god, Chuma turns the man into a raging wife-killer. The taoist priest is eventually called in for a spirit battle with the works.