明朝成化年间，朝纲(gāng )腐败，奸邪当道。西厂东(dōng )厂为宦官把持，混淆黑白，陷害忠良，朝野内外(wài )噤若寒蝉(chán )。时有赵怀安（李连(lián )杰 饰）等流亡剑客挺身而出，接连铲除东(dōng )厂数名(míng )奸佞，致令(lìng )阉贼胆战(zhàn )心惊。适值此时，风头正劲(jìn )的西(xī )厂