明朝成化年间，朝纲(gāng )腐败，奸邪当(dāng )道。西厂东(dōng )厂为宦官把持(chí )，混淆(xiáo )黑白，陷害(hài )忠(zhōng )良，朝野内外噤若寒蝉。时有赵怀安（李连杰 饰）等流亡剑客(kè )挺(tǐng )身(shēn )而(ér )出，接连铲除东厂数名奸佞(nìng )，致令阉贼胆战心(xīn )惊。适值此时，风头正劲的西厂(chǎng )