明朝成(chéng )化年间，朝纲腐败，奸(jiān )邪当(dāng )道。西厂东厂为宦官把(bǎ )持，混淆黑白，陷害忠(zhōng )良，朝(cháo )野内外噤若寒(hán )蝉。时有赵怀安（李连杰 饰）等(děng )流(liú )亡剑客挺身(shēn )而出(chū )，接(jiē )连铲除东厂数名奸佞，致令阉贼胆战心惊(jīng )。适值此时，风头正劲的西厂