"得(dé )赌神毕(bì )生(shēng )绝技的刀(dāo )仔（刘德华(huá )）在龙五（向华强）的陪同下重出(chū )江湖，代表师父以赌技致力慈善(shàn )事(shì )业，人称赌侠。遇到欲拜赌神为师(shī )号称赌圣的阿星（周星(xīng )驰）后，两人互展(zhǎn )计谋绝技，打成平(píng )手。