宋末蒙古蒙哥大汗(🥇)南下侵宋,途中遇到飞天炮(pào )阻(🛍)击(🔱)身受重伤。后法(fǎ )王虽偷得飞天(🌰)炮,然(rán )(🏴)蒙哥伤势(shì )加重,只得撤兵。返程中被忽必(bì )烈偷袭,逃入(rù )(🔸)雪山(🎩)。蒙哥(🛍)感(🎡)到命不(bú )久已,写下(xià )血书(shū ),传位尚年幼王子(zǐ )海都后自尽。大雪(xuě )山中人马(🥀)走散,飞天炮和(💞)血书失踪(zōng ),海都(dōu )逃(táo )(🥁)出雪山(🚨)后遇到(😞)受伤的法王(🦗),原(🎛)来他(㊗)受到(dào )中(💻)原(🗞)三大(📙)高(🔝)手的袭击,他们(men )一起返回雪山(💪)找寻(xún )其(⏰)它队(🍄)伍但是雪山迷宫(gōng )使(shǐ )(🤲)他们放弃。与(yǔ )(⛳)此(🏯)同时三(🥕)大高手(🧟)也感无(wú )力进入(rù )雪山,将进雪山迷城的地(dì )图分(fèn )成(chéng )三(sān )份交各(gè )人(rén )保存(🏻)。法王(⛏)带着海(hǎi )都勉强到达师弟银枪法王处(🔈),将(jiāng )海都托付给(gěi )(🤔)师弟(🔍)后毒发身亡。海都从此身负(fù )夺(duó )(💸)回帝(dì )位的重任(rèn )。