明朝成化年间，朝纲腐(fǔ )败，奸(jiān )邪(xié )当道。西厂(chǎng )东厂为宦官把持，混淆黑白，陷害(hài )忠良(liáng )，朝野内外(wài )噤若寒蝉。时有赵怀(huái )安（李连杰 饰）等流亡剑客(kè )挺身而(ér )出，接连铲除东(dōng )厂数名奸佞，致令阉贼胆(dǎn )战心惊。适值此时(shí )，风头正劲的西厂