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Nobita and Doraemon find a giant robot in pieces which they later assemble. It turns out to be a destructive weapon and the gang must save Earth from an imminent invasion.
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.
Nobita wishes the world into a magic-reliant one with Doraemon's Moshimo-Box, and, along with his friends, must stop an asteroid from hitting the planet with help from a sorcerer-in-training.
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...
Nobita finds a passage to a spaceship in another dimension. With their new friends, he and Doraemon fight the cruel leader of an exploited 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.
When Suneo does not show Nobita the fossil of a dinosaur claw, he takes up a challenge to find a dinosaur. He digs up a hillside and finds an egg, which later hatches and becomes a dinosaur.
Nobita, after wondering if Heaven truly exists, asks for Doraemon to take him there. When his robot pal suggests that they make their own Heaven, Nobita enlists Shizuka, Gian, and Suneo to help, but a war breaks out between two islands in the clouds that could have terrible environmental consequences if Nobita and Doraemon don't bring peace in time!
As Nobita, Shizuka, Gian, and Suneo are auditioning for a role in their school's play based on "Journey to the West", the coveted role of Son Goku is hotly contested. After suggesting that the real Great Sage Equal to Heaven should play himself, knowing that the story is only a legend, Nobita and Doraemon go back in time to find their own fake Monkey King, but arrive in present day with the story's demons having taken over the world. The only way for things to go back to normal is for Nobita and pals to reenact the tale...for real!
Nobita and his friends get transported to an animal planet after a mysterious pink fog appears inside his house. They work together with the natives to find the origin of the fog.