宋末蒙古蒙(méng )哥大(dà )汗南下(🐌)侵(🍩)宋,途中(zhōng )遇到(🕟)飞天炮阻击(🤢)身(shēn )受重(chóng )伤。后法王虽偷得飞天炮,然蒙哥(💤)伤势(shì )(🎾)加(jiā )重,只得撤(🎏)兵。返(fǎn )程中被忽(hū )必烈偷(🐿)袭,逃入雪(xuě )山。蒙哥(🕖)感到命不(💆)久已,写(xiě )下血(xuè )书,传位尚(shàng )年幼(🎫)王(wáng )子海都后自尽。大雪山中人马走散,飞天炮和血书(📎)失踪,海(hǎi )(🥁)都(🌚)逃出(🚨)雪(🛑)山后(hòu )遇到(🔢)受(❔)伤的法王,原(yuán )来(lái )(🥎)他(🥔)受到中原三大高(gāo )(🐑)手的(de )袭(xí )(🤠)击,他(tā )们一(👓)起返回雪山找(⏰)寻(🈴)其(qí )它队伍(🤷)但是(shì )(🧤)雪山迷宫使(⛳)他(tā )们放(👺)弃。与此同时三(sān )大高(gāo )(🚴)手也感无力进入雪山(🈁),将进雪(xuě )山(🏉)迷城的地图分成三份交(🈸)各人保存。法王带(dài )着海都(dōu )勉(miǎn )强到达师弟银枪(qiāng )(😝)法王处,将海都托(tuō )付给师弟后毒(dú )发身亡。海都从此(cǐ )身负(🥅)夺回帝位(wèi )的重(chóng )任。