Doraemon: The New Record of Nobita’s Spaceblazer

The film opens with Roppuru and Morina playing on a park aboard a spaceship. Suddenly, an earthquake paralyzes the ship. Morina's father rushes to fix it, but a lightning strike occurs and he is presumed dead.

After waking, Nobita believes it was all a dream. Doraemon explains that Gian and Suneo want to find him. They push him to convince a group of middle school baseball players to hand over the empty lot, but the plan backfires as the players chase him and knock him out.

That night Nobita dreams of Roppuru and Chammy trying to flee capture aboard a ship. The next morning, his friends press him to ask Doraemon to create land for a baseball stadium, and he reluctantly agrees.

While Nobita sleeps, Chammy forces the door between them open and raids the fridge. Nobita wakes Doraemon and they see Chammy stealing food. They chase Chammy, capture her, and she leads them to a passage into the spaceship. They fix the ship and leave for home.

Nobita and Doraemon fear they might not have a home to return to and go through the passage again, only to become stranded. They meet Roppuru's family and Morina; Morina is dismissive at first but realizes the spaceship has gone missing. Once the ship is found they leave and promise to bring their friends along.

The following day Nobita brings his friends to the planet, but mining agents attack to seize resources. His friends flee back to their own dimension.

Dorami takes Doraemon to see a doctor; Nobita tries to leave by himself and gets sucked into another dimension. There he encounters another planet and is chased by an unknown figure, only to be saved by one of Doraemon's gadgets.

On the next visit, Nobita and Doraemon clash with the same mining agents and are defeated along with their ship. Roppuru tells the town about their story, but the miners take away the evidence. The headquarters then calls Guillermin to help defeat Nobita and Doraemon; he devises many schemes but fails.

Doraemon and Nobita tell the others they cannot return for a while. Guillermin questions Morina and apologizes about her father's death, hinting at the real reason behind it. Agents attach a bomb to the dimensional door that will blow up anyone who opens it.

Opening the dimensional door triggers the bomb and it explodes, leaving the ship in ruins but not directly harming the group. The protagonists survive the explosion and regroup.

The people of Koya Koya are told to evacuate as the mining corporation plans to blow up the planet. Chammy and Clem retrieve the dimensional door while Morina and Roppuru try to figure out the true situation.

Chammy enters Nobita's room and together with Nobita and Doraemon they go inside to find Roppuru, while Nobita's other friends and Dorami follow, knowing this is their last chance.

Doraemon and Nobita fight their way through to Guillermin and Nobita defeats him in combat. The detonation button is pressed, and the higher ups flee from the scene.

Doraemon, Nobita, Roppuru, and Morina use a robotic machine to pull the destructive device away from the planet into another dimension, where it explodes. Due to dimensional distortion, Morina enters another dimension and finds her father who has resided there the whole time.

The movie ends with everyone bidding farewell as Nobita and Doraemon reflect on their experiences in Koya Koya and what it meant for their friendship.