宋(sòng )末(mò )蒙古蒙哥(gē )大汗南下侵(🏽)宋，途中(🌰)遇到(🕋)飞天炮阻(🛍)击身受重伤。后法王虽(suī )偷得飞天炮，然蒙(🗼)哥(🐮)伤势(💤)加(😧)重，只(zhī )得撤兵(🎲)。返程(chéng )中(zhōng )(🏇)被(♑)忽必(bì )烈(🚤)偷袭，逃入雪(👑)山。蒙哥感(🎡)到命(mìng )不久(🙍)已，写(🔲)下(xià )血书，传(🚥)位尚年幼王子海都后(hòu )自(🍮)尽。大雪山中人马走散，飞天(🤷)炮(pào )和血书(🚢)失(🌙)踪，海(hǎi )都逃(🥁)出雪山(🚨)后遇到受伤的(de )法王，原(yuán )来他受(shòu )到(dào )中原三大高(🔝)手的袭击，他(tā )们(🌞)一起返回雪山找寻(xún )其(qí )它队(🍄)伍但是雪山迷宫使他(tā )们放弃(💠)。与(yǔ )此同(tóng )时(shí )三大高(gāo )手也(yě )感无(wú )(🤖)力进入雪山，将进(jìn )雪山迷城的地图(tú )分成三(🚗)份交各人保存。法王带(🐨)着海(hǎi )都勉强(🌪)到(dào )达师弟银枪法王处，将海都托付(🈺)给师弟(🔍)后毒(dú )发(fā )身亡。海(💏)都(dōu )从此身负(fù )夺回(huí )帝位的(🏃)重任。