明朝成化年间，朝纲腐败，奸邪当道(dào )。西厂东厂为宦官把(bǎ )持，混淆黑白(bái )，陷害(hài )忠良，朝野内外噤若寒(hán )蝉。时有赵怀安（李连杰 饰(shì )）等流(liú )亡剑(jiàn )客挺身而出，接连铲除东厂数名奸佞，致令阉(yān )贼(zéi )胆战(zhàn )心惊。适值此时(shí )，风头正(zhèng )劲的西厂