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

Source: ANN

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Alternative setting: Doraemon: Nobita no Nankai Daibouken
Parent story: Doraemon (2005)