明朝成(chéng )化(huà )年间，朝纲腐败，奸邪当道。西厂东(dōng )厂为宦官把(bǎ )持(chí )，混淆(xiáo )黑白，陷害忠(zhōng )良，朝野内外噤若(ruò )寒蝉。时(shí )有(yǒu )赵怀安（李(lǐ )连杰 饰(shì )）等流亡剑客挺身而出，接连铲除东厂数名奸(jiān )佞，致令(lìng )阉贼胆战心惊。适值此时，风头正劲(jìn )的西厂