Doraemon, Nobita, Shizuka, Gian, and Suneoset out on an adventure in the Caribbean Sea to find the treasure island. Nobitais the captain of a ship and fights his enemies on board. Shizukagets kidnapped, and a storm impedes their journey. Mini-Dora help Nobitaand friends on their journey. When the adventurers finally find the mysterious Treasure Island, they discover it is more than just an ordinary island.