明朝成化年间，朝纲(gāng )腐败，奸邪当道。西厂东厂为宦官把持，混淆黑白(bái )，陷害忠良，朝野内外(wài )噤(jìn )若(ruò )寒蝉。时有赵(zhào )怀安（李(lǐ )连杰 饰）等流(liú )亡(wáng )剑客挺身而出，接连铲除东厂数名奸佞，致令阉(yān )贼(zéi )胆战心(xīn )惊。适值此时，风头正劲的西厂