明朝成化年间，朝(cháo )纲(gāng )腐败，奸邪当道。西厂东(dōng )厂为宦官把持，混淆(xiáo )黑(hēi )白，陷害忠良，朝野内外噤若寒蝉。时有赵怀(huái )安（李连杰 饰）等(děng )流亡剑(jiàn )客挺(tǐng )身(shēn )而(ér )出，接连铲除东厂数(shù )名奸佞，致令阉贼胆战心惊。适值此时(shí )，风头正劲的西厂