明朝成化年间，朝纲(gāng )腐败(bài )，奸(jiān )邪当道。西厂东(dōng )厂为宦官把持，混淆黑白，陷害忠(zhōng )良，朝野内外噤(jìn )若(ruò )寒蝉。时有赵怀安（李(lǐ )连(lián )杰 饰）等流亡剑(jiàn )客挺身而出(chū )，接连铲除(chú )东厂数名奸佞，致令阉贼胆(dǎn )战心惊。适值此时，风头(tóu )正劲的西厂