明朝成化年间，朝(cháo )纲腐败，奸邪当道。西厂(chǎng )东厂为宦官(guān )把持，混淆黑白，陷害忠良，朝野(yě )内外噤若寒蝉(chán )。时有赵(zhào )怀(huái )安（李连杰 饰）等流亡(wáng )剑客挺身而出，接连(lián )铲除东(dōng )厂(chǎng )数名奸佞，致令阉贼胆战心惊。适值此时，风头正劲(jìn )的西厂