"得赌神毕(bì )生(shēng )绝技(jì )的刀仔(zǎi )（刘德华）在龙五（向华强）的陪同下(xià )重出(chū )江湖，代表师父以赌技(jì )致力慈善(shàn )事业，人称赌侠。遇到欲拜赌神为师(shī )号称赌圣的阿星（周(zhōu )星驰）后，两人互展计谋绝技，打成平(píng )手(shǒu )。