明(míng )朝成(chéng )化年间，朝(cháo )纲腐败，奸邪当道(dào )。西厂(chǎng )东厂为宦官把持，混淆黑白(bái )，陷害忠良，朝野内外(wài )噤若寒蝉。时有赵怀安（李连杰 饰）等流(liú )亡(wáng )剑客(kè )挺身而出，接连铲除东(dōng )厂数名奸佞，致令阉贼胆战心惊(jīng )。适值此时，风(fēng )头正劲的西厂