明朝成化年(nián )间，朝(cháo )纲腐败，奸邪当道。西厂(chǎng )东厂为(wéi )宦官把持，混淆黑白，陷害忠良，朝(cháo )野内外噤若寒(hán )蝉。时有赵怀安（李连杰 饰）等(děng )流亡剑客挺(tǐng )身而出，接连铲除东(dōng )厂数名奸佞(nìng )，致令阉贼(zéi )胆(dǎn )战心(xīn )惊。适值此时，风头正劲的西厂