明朝成化年间，朝纲腐败，奸邪当道。西(xī )厂(chǎng )东厂为(wéi )宦(huàn )官把持，混淆黑白，陷(xiàn )害忠良，朝野内外噤若寒蝉。时有(yǒu )赵怀(huái )安（李(lǐ )连杰(jié ) 饰）等流亡剑客挺(tǐng )身(shēn )而出，接连铲除东厂数名奸佞，致令阉贼胆战心(xīn )惊。适值此(cǐ )时，风头正劲的西厂