After bringing a fossilized egg back to life with the Time Cloth, Nobita finds himself the owner of a baby dinosaur. Everything is fine until it grows up. Nobita and friends use Doraemon's time machine to return it back to its own time.

Nobita, Doraemon, and the rest must come to the aid of mermaid princess Sophia, whose undersea kingdom is suffering under the weight of a war. Their only hope lies in a mythical sword from the planet Aqua...

A sapling Nobita discovers is turned into a plant-boy with help from Doraemon, and becomes Earth's only hope at passing judgment from the dryadic aliens of the Green Planet.

When a malevolent entity intent on eradicating music from the world surfaces, Nobita and his friends must unite with supernatural companions to safeguard the planet.

Nobita and Doraemon use time tree Mochi and catch a big bird, which has been extinct for 500 years ago. To protect the animal, Nobita and Doraemon go to Beremon Island, overseen by a golden beetle named Herakles.

During summer vacation Nobita picks up a small rocket containing Papi, a palm-sized alien president escaping rebels on his home planet Pirika.

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.

Doraemon and his friends travel to ancient Japan where they meet Kukuru. When Kukuru tells them that his tribe has been enslaved by Gigazombie, Doraemon decides to help him.

Sewashi and Doraemon find themselves way back in time and meet Nobita. It is up to Doraemon to take care of Nobita or else he will not return to the present.

Nobita is followed by a stray dog on his way home and decides to help it find its original owner with the help of Doraemon. They find out that the dog is actually a prince in its homeland in Africa.