明(míng )朝成化年间，朝纲腐败，奸邪当道。西(xī )厂东厂为宦官把持，混(hún )淆黑白，陷(xiàn )害忠(zhōng )良，朝(cháo )野内外噤若寒蝉。时有赵怀(huái )安（李连杰(jié ) 饰）等流亡(wáng )剑客挺身而出，接连铲除东(dōng )厂数名奸佞，致令阉贼胆战心惊。适值此时，风头(tóu )正劲(jìn )的西厂