明朝成化年间，朝纲腐败，奸邪当道。西厂(chǎng )东厂为宦官把持，混(hún )淆黑白(bái )，陷害忠良，朝(cháo )野内外噤若寒蝉。时有赵怀安（李(lǐ )连杰 饰(shì )）等流亡剑客挺身而出，接连铲除东(dōng )厂数名奸(jiān )佞，致令阉贼胆战心惊(jīng )。适(shì )值此时，风头正劲的西厂(chǎng )