明朝成化年间，朝纲(gāng )腐败，奸邪当道。西(xī )厂东厂为宦官把持(chí )，混淆黑(hēi )白，陷害忠(zhōng )良，朝野内外噤若寒蝉。时(shí )有赵怀安（李连(lián )杰 饰）等流亡剑(jiàn )客(kè )挺身而出，接连铲除东(dōng )厂数名奸(jiān )佞，致(zhì )令阉(yān )贼胆战心惊。适值此时，风(fēng )头正(zhèng )劲的西厂