明朝成化年间，朝纲腐(fǔ )败(bài )，奸邪(xié )当道。西厂(chǎng )东厂为宦官把持，混淆黑白，陷(xiàn )害(hài )忠(zhōng )良，朝野内外噤(jìn )若寒(hán )蝉。时有赵怀(huái )安（李(lǐ )连杰 饰）等流亡剑客挺身而出，接连铲(chǎn )除东厂数名奸佞，致令阉贼(zéi )胆战心惊。适值(zhí )此时，风头正劲的西厂