明朝成化年间，朝纲(gāng )腐败，奸邪当道。西厂(chǎng )东(dōng )厂(chǎng )为宦官把持，混淆黑白，陷害忠良，朝野内外(wài )噤若寒蝉。时有赵怀安（李(lǐ )连(lián )杰 饰）等流亡剑(jiàn )客挺身而出，接连铲除东厂数名奸佞，致令阉贼胆战心惊。适值此时(shí )，风头(tóu )正劲(jìn )的西厂(chǎng )