明朝成化年间，朝(cháo )纲(gāng )腐败，奸邪当道。西厂东厂为宦官把(bǎ )持，混淆黑白(bái )，陷害忠良，朝(cháo )野内外噤若寒蝉。时有赵怀安（李(lǐ )连杰 饰）等流亡剑客挺身(shēn )而(ér )出(chū )，接连铲(chǎn )除东厂数名奸佞，致(zhì )令阉贼胆战心(xīn )惊。适值(zhí )此时，风头正劲的(de )西厂