为了躲避夏日的酷暑，哆啦A梦（水天葵 配音）带着大雄（大原惠美 配音）、静香（嘉薮由美 配音）、胖虎（木村昴 配音）和小夫（关智一 配音）来到了漂浮在南太平洋中的一座冰山上。他们利用道具“冰雕工艺组”打造了惊险刺激而又妙趣横生的游乐园，小伙伴们乐而忘返。可就在此时，乐园突然垮塌，大雄则偶然从冰层中捡到了一枚金环。根据调查发现，金环居然是十万年前的产物。为了寻找它的主人，哆啦A梦一行穿越时空。在古老的南极，他们见到了一座神秘都市，并发现了奇怪的生物。 　　而他们此次的冒险，将与自身以及地球的命运息息相关……Unable to endure the midsummer heat, Doraemon transports Nobita and his friends to a huge iceberg floating in the South Pacific. While creating an amusement parks with the secret tool "Ice-working Iron" the group finds a mysterious golden ring in the ice. Upon closer examination, they determine that the ring was buried in Antarctica 100,000 years ago - before people could have lived there. Doraemon and friends head to Antarctica looking for the owner of the ring and come across the ruins of a huge city buried in the ice. Using Doraemon's Time Belt, the group travels back 100,000 years ago and meets the young girl Kara who is connected to the mysterious ring. But now the group must fight for survival as Doraemon faces the crisis of the entire Earth freezing.