宋末蒙古(🆓)蒙哥大(🐽)汗南下侵(🏽)宋，途中遇(yù )到飞(fēi )天炮(pào )(🕸)阻击身受(shòu )重伤。后(🔧)法王虽偷得(dé )飞天(tiān )(🌰)炮，然蒙哥伤势加重，只得撤兵。返程(🌗)中(zhōng )被(♑)忽必烈(🚤)偷袭，逃入雪(👑)山。蒙哥感到(dào )命(mìng )不久已，写下血书，传(🚥)位尚(shàng )年幼(📞)王(wáng )子海都后自(🍮)尽。大(😻)雪山中人马(mǎ )走散，飞天炮和血(⏺)书失踪，海都(dōu )逃出雪山(🚨)后遇到受伤(shāng )的法王(🦗)，原来他受到(🥔)中原三大高手的袭击，他们一起返(fǎn )回(🙀)雪山(💪)找(zhǎo )(⛓)寻其它队伍但是(🤷)雪山(shān )迷宫使他(tā )们放弃。与(yǔ )(⛳)此(🏯)同时三大高手(🧟)也(🚴)感(gǎn )无(wú )力进(🕯)入雪(👣)山，将进(jìn )雪山迷城的(de )地图(👊)分成三份交各人(🈸)保存。法王带(dài )着海都勉(miǎn )强(🌪)到达师(shī )弟银(📟)枪(🐩)法王处，将海都托付给师弟(dì )后毒发身(shēn )亡。海都从此(cǐ )身(shēn )(👵)负夺回(huí )帝(dì )位的(🏃)重(chóng )任(rèn )。