明朝成化年间，朝纲腐败，奸邪当道。西厂东厂为宦官把持，混淆黑白，陷(xiàn )害忠(zhōng )良，朝(cháo )野内外噤若(ruò )寒蝉(chán )。时有赵怀(huái )安（李连杰 饰(shì )）等流(liú )亡剑客挺(tǐng )身而出，接连铲除东厂数名奸佞，致令阉贼胆战(zhàn )心惊(jīng )。适值此时，风头正(zhèng )劲的西(xī )厂