明朝成化年(nián )间，朝纲腐败，奸(jiān )邪当道。西厂东厂(chǎng )为宦官把持，混(hún )淆黑白，陷害忠良，朝野内外(wài )噤若寒蝉。时有赵怀(huái )安（李连杰(jié ) 饰）等流亡(wáng )剑客(kè )挺身而出，接(jiē )连铲除(chú )东厂数名奸佞，致令阉(yān )贼胆战心惊。适值此时，风头正劲的西(xī )厂