明朝成化年间，朝纲腐败，奸邪当道。西厂东(dōng )厂为宦官把持(chí )，混淆(xiáo )黑白，陷害(hài )忠良，朝野内外噤若寒蝉。时有赵(zhào )怀(huái )安（李(lǐ )连杰 饰）等流(liú )亡剑客挺身而出，接连铲(chǎn )除东厂数名(míng )奸佞，致令阉贼胆战(zhàn )心惊。适值此时，风头正(zhèng )劲的西厂(chǎng )