明(míng )朝(cháo )成化年间，朝纲腐败，奸邪当道。西厂东厂为宦官把持，混(hún )淆黑白，陷害忠良，朝野内外(wài )噤若寒(hán )蝉。时(shí )有(yǒu )赵怀安（李(lǐ )连杰 饰）等流亡(wáng )剑客挺(tǐng )身而(ér )出，接连铲除东厂数名奸佞，致令阉贼胆战心惊。适值(zhí )此时，风头(tóu )正劲的西厂(chǎng )