明朝成化年间，朝纲(gāng )腐败，奸邪当道。西厂东厂(chǎng )为宦官把持，混淆(xiáo )黑白，陷害忠良，朝野内外噤若寒(hán )蝉。时有赵怀(huái )安（李(lǐ )连杰 饰）等流(liú )亡剑(jiàn )客挺身(shēn )而出，接连铲(chǎn )除东厂数名(míng )奸佞，致令阉贼胆战心惊。适值此时，风头正劲的西厂