Doraemon, Nobita and his friends go to find Utopia, a perfect land in the sky where everyone lives with happiness, using an airship having a time warp function.
One day during summer vacation, a palm-sized alien named Papi appears from a small rocket that Nobita picks up. He is the president of Pirika, a small planet in outer space, and has come to Earth to escape the rebels. Doraemon and his friends are puzzled by Papi’s small size, but as they play together using the secret tool “Small Light”, they gradually become friends. However, a whale-shaped space battleship comes to earth and attacks Doraemon, Nobita and the others in order to capture Papi. Feeling responsible for getting everyone involved, Papi tries to stand up to the rebels. Doraemon and his friends leave for the planet Pirika to protect their dear friend and his home.
Nobita accidentally found a fossil dinosaur egg mixed with rocks in the dinosaur fossil exhibition site that he had visited before. He returned it to its original state with the "Time blanket". After hatching, the egg hatches a new species of dinosaur that is not named in the Cosmic Encyclopedia and names them Kyu and Myu Although they want to take care of them secretly, there are dinosaurs in the city still discovered by residents; Nobita and his friends were forced to bring them back to the Cretaceous period 66 million years ago the dinosaurs time. Just the time of Dinosaurs Extinction.
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 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.
While one kid is being bullied, another one witnesses the revolting situation. Filled with guilt, fear, and powerlessness; he starts wondering if just minding his own business is the right thing to do.
