明朝成化年间，朝纲腐败，奸(jiān )邪(xié )当道。西厂东(dōng )厂为宦官(guān )把(bǎ )持，混淆黑白，陷(xiàn )害忠良，朝野内外噤若寒蝉。时有赵怀安（李连杰(jié ) 饰）等(děng )流亡剑客挺身而出(chū )，接(jiē )连铲除东(dōng )厂数名奸佞，致令阉贼胆战心惊。适值此时，风头正(zhèng )劲的西厂