阿权是南阳降头师的徒弟，学艺多年，峰爷有位年轻貌美的妻子阿娇，峰爷因练降头术，常冷落娇妻，不料阿权乘虚而入，与阿娇打得火热，一日，二人的犯罪情节暴露，峰爷要置劣徒于死地，阿娇暗中帮助阿权偷了峰爷的镇山之宝逃跑。阿权为了阿娇不惜一切苦练降头术，结果反中了师傅的毒咒，因为走火入魔，阿权从此中了邪术杀人无数，峰爷知情后，而四处追查阿权的下落，决定大义灭亲。

"Devil Sorcery" is an entertaining HK black magic film about a wizard who performs many hideous magic rituals. The student of a good wizard decides to get it on with his master's wife and all hell breaks loose after the tragic death of his master. The ghastly events involve flying heads and graphic centipede puking.