明朝成化年间，朝纲(gāng )腐败，奸邪当(dāng )道。西厂东厂为宦官把持，混淆黑白，陷害忠(zhōng )良，朝野内外噤若寒(hán )蝉。时有赵怀(huái )安（李连(lián )杰 饰(shì )）等流亡(wáng )剑(jiàn )客挺身而出，接连铲除东厂数名(míng )奸(jiān )佞，致令(lìng )阉贼胆战心惊。适值此时，风头正(zhèng )劲的西厂