明朝成化年间，朝纲腐败，奸邪当道。西(xī )厂(chǎng )东厂为宦官把持，混淆黑白，陷(xiàn )害忠(zhōng )良，朝野(yě )内外噤(jìn )若寒(hán )蝉。时有赵怀安（李连杰 饰）等流(liú )亡剑客(kè )挺身而出(chū )，接(jiē )连铲除东厂数名奸佞，致令阉(yān )贼(zéi )胆战心惊(jīng )。适值此时，风头正劲(jìn )的西厂