明朝成化年间，朝纲腐败，奸邪当道。西厂东(dōng )厂为宦官把持，混淆黑白，陷害忠(zhōng )良，朝野内外噤若寒蝉。时有赵怀安（李连(lián )杰 饰(shì )）等流亡剑(jiàn )客挺身而出，接连铲除(chú )东(dōng )厂(chǎng )数名奸(jiān )佞，致令阉贼胆战心惊(jīng )。适值此时，风(fēng )头正劲的西厂(chǎng )