明朝成化年间，朝纲腐(fǔ )败，奸(jiān )邪当道。西厂东厂为宦官(guān )把(bǎ )持，混淆黑(hēi )白，陷害忠(zhōng )良，朝野内外噤若寒蝉。时有赵(zhào )怀安（李(lǐ )连杰 饰）等(děng )流亡剑客(kè )挺身而出，接(jiē )连铲除东厂数名奸(jiān )佞，致(zhì )令阉贼胆战心惊。适值此时，风头正劲的西厂