"得(dé )赌神毕生(shēng )绝技的刀(dāo )仔（刘德(dé )华）在龙五（向华强）的陪同(tóng )下重出江湖，代表师父以赌技致力慈善事业，人称(chēng )赌侠。遇到(dào )欲(yù )拜赌神为师号称赌圣的阿星(xīng )（周星驰）后(hòu )，两人互展(zhǎn )计谋绝技，打成平手。