明朝成化年间，朝纲腐败，奸(jiān )邪当道。西(xī )厂(chǎng )东厂为(wéi )宦官把持，混淆黑白，陷(xiàn )害忠良，朝野内外(wài )噤若寒蝉。时(shí )有(yǒu )赵怀安（李连杰 饰(shì )）等流亡剑客(kè )挺(tǐng )身而(ér )出，接连铲除东厂数名奸佞，致令(lìng )阉贼胆战心惊。适值此时，风头(tóu )正劲的西厂