明朝成化年间，朝纲(gāng )腐败，奸(jiān )邪当道(dào )。西厂东厂为(wéi )宦官把持，混淆黑白，陷害(hài )忠良，朝野内外(wài )噤若寒蝉。时有赵怀安(ān )（李(lǐ )连(lián )杰 饰）等流亡剑客挺身(shēn )而出，接连铲除东厂数名奸佞，致令阉贼胆战(zhàn )心惊。适值此时，风头(tóu )正(zhèng )劲的西厂(chǎng )