明朝成化年间，朝(cháo )纲腐败，奸邪(xié )当道。西厂东厂为宦官把持，混淆(xiáo )黑白，陷害(hài )忠(zhōng )良，朝野内外噤若寒蝉。时有赵怀(huái )安（李连杰(jié ) 饰(shì )）等流亡剑客挺身而出，接连铲除东厂(chǎng )数(shù )名奸佞，致令阉(yān )贼(zéi )胆(dǎn )战心惊。适值此时，风(fēng )头正劲的西厂(chǎng )