明朝成(chéng )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(zhōng )良，朝野内外(wài )噤若寒蝉。时有赵怀安（李(lǐ )连(lián )杰 饰）等流亡剑客挺身而出，接连(lián )铲除东厂数名奸(jiān )佞，致(zhì )令阉贼胆战心惊(jīng )。适值此时，风头正劲(jìn )的西厂