宋末(👷)蒙古(gǔ )蒙(⛲)哥大汗南(📼)下侵(qīn )宋,途(tú )中(zhōng )遇到(dào )飞天炮(pào )阻(zǔ )击身(🕰)受重伤。后法王虽(🆖)偷得飞天(🌰)炮,然蒙哥(gē )(🐮)伤(shāng )势加重,只得撤兵。返程中被忽(hū )必烈偷袭,逃(🕔)入(rù )(🔸)雪(xuě )山。蒙哥感(gǎn )到命(mìng )不久已(yǐ ),写下血书,传位尚年幼王子(zǐ )海(hǎi )都后自尽。大雪(🚸)山中人马(🥀)走散(🤯),飞天炮和血(xuè )书失踪,海都逃出雪山(🚨)后遇到(dào )受(🖲)伤的法(💱)王(🦗),原来他(㊗)受到中原三大高(gāo )手(shǒu )(✋)的(de )袭(xí )击,他(tā )们一起返(👓)回雪山找寻(🎾)其它队伍(wǔ )但是雪山迷宫(gōng )(🚻)使他(🕙)们放(😍)弃。与此同时三大高(🐀)手也(yě )感无力进(🕯)入雪山,将进雪(xuě )山迷(💔)城的地图分成(chéng )三(🚗)份交各人保存(cún )。法王带着(zhe )海(hǎi )都勉强到(dào )达(🌼)师弟银(📟)枪(qiāng )(🐩)法王(wáng )处,将海都托(tuō )付给(🤔)师弟后毒(🤥)发身亡。海(hǎi )都(📸)从此(🔷)身负夺(💸)回帝位(wèi )的重任。