明朝(cháo )成化年间，朝纲腐败，奸邪当道(dào )。西厂东厂为宦官把持，混淆黑白，陷害忠(zhōng )良，朝野内外(wài )噤若寒蝉。时有赵(zhào )怀安（李连杰 饰）等(děng )流亡剑客挺(tǐng )身而(ér )出(chū )，接连铲除东厂数名奸佞(nìng )，致令阉贼胆战心惊。适值此时，风头正劲的西(xī )厂(chǎng )