"得赌神毕(bì )生(shēng )绝(jué )技的刀(dāo )仔（刘德华）在龙五(wǔ )（向华强）的陪同下(xià )重出江(jiāng )湖，代表师父以赌技致力慈善事业，人称赌(dǔ )侠。遇到欲(yù )拜(bài )赌神为师号称赌圣的阿星（周星驰）后，两人互展(zhǎn )计谋绝技，打(dǎ )成(chéng )平手(shǒu )。