明朝成化年间，朝纲(gāng )腐败，奸邪(xié )当道。西厂东厂为宦官把持，混(hún )淆黑白，陷害忠良，朝野(yě )内外(wài )噤(jìn )若寒蝉。时有赵怀安（李(lǐ )连杰 饰）等流亡剑(jiàn )客挺身而(ér )出(chū )，接连铲除东厂数名奸佞，致令(lìng )阉贼胆战心惊(jīng )。适(shì )值此时，风头正劲的西厂