明朝成化年间，朝纲腐败，奸(jiān )邪当道。西厂东厂(chǎng )为宦(huàn )官把(bǎ )持，混淆黑白，陷害(hài )忠良，朝野内外噤若寒蝉。时(shí )有赵怀安（李(lǐ )连杰(jié ) 饰）等流亡剑客挺身而出(chū )，接连铲除东(dōng )厂数名奸佞，致令阉贼胆战心惊。适值(zhí )此时，风头正劲的西(xī )厂(chǎng )