While enjoying a futuristic space action game borrowed from Doraemon, Nobita is startled when a real miniature spaceship suddenly crashes into his room! A tiny robot emerges from the spacecraft, introducing himself as a loyal servant of Princess Arle from the planet Lilliput. He begs Nobita to help rescue the princess, who has been captured by the space invaders known as the Akanbeaders. When Nobita learns that Princess Arle is a beautiful girl who looks just like Shizuka, he sets off to confront the Akanbeaders and save her... But what awaits him on this extraordinary adventure?

After hearing stories from his father about the past, Nobita begins wishing he could live in an older era without school or homework. Ignoring Doraemon’s warnings that life in the past was actually difficult, he travels back in time and ends up in a primitive countryside. A farming family lets him stay with them, but Nobita quickly realizes how harsh life is without modern comforts like television, manga, or proper food. As hunger and discomfort grow, he starts regretting his decision.

Doraemon is kidnapped by a criminal group targeting caretaker robots, just before his birthday, forcing Nobita, Shizuka, Gian, Suneo, Dorami, and Sewashi to launch a rescue mission. As they uncover a conspiracy involving robot trafficking and a rogue factory manager at Matsushiba Factory, they learn Doraemon risks being reset and losing his memories. Fighting through security drones, mechanical traps, and the crab-like captor, they reach the factory’s core just as Doraemon is about to be erased. In the end, the manager cancels the reset, Doraemon is saved with his memories intact, and he reunites emotionally with Nobita before they return home together.

For Doraemon’s birthday, Nobita and the others gather in the 22nd century to hold a party at Sewashi’s house. While buying a cake, Nobita finds a beautiful bell and gives it to Doraemon as a present, making him very happy. Later, Doraemon reveals he has fallen in love with a flower shop robot named Bell, who suddenly appears searching for the lost bell. Mistaking Bell’s request for help as an invitation to a date, Doraemon excitedly follows her back to the future, while a curious Nobita secretly tags along to see how the “date” unfolds.

On a cold snowy day, Nobita learns that Doraemon must return to the 22nd century, which leaves him devastated. Despite his initial denial and emotional outburst, including yelling at Doraemon and running away, he slowly begins to understand the situation after his father explains that Doraemon also suffers when Nobita is sad. Realizing he needs to become independent, Nobita accepts the separation. Later, he and Doraemon share a final emotional moment, remembering how they first met and promising to move forward. Doraemon, deeply moved, cries as he leaves, proud of Nobita’s growth.

After seeing a blue bird on his way to school, Nobita gets excited and plans to search for it with his classmates, but they abandon him to go to an idol autograph event instead. Feeling disappointed, Nobita returns home and hears a huge explosion coming from his room, where he finds a mysterious glass case containing a sleeping girl. The girl wakes up and introduces herself as Rurii, a care robot sent from the future, but she was actually deployed by an evil organization led by Walser, who plans to use her to eliminate Nobita. Unaware of the danger, Nobita happily befriends Rurii, while the villains secretly prepare their assassination plot.

On Doraemon’s birthday, Nobita plans a surprise celebration, but the two end up in a huge argument after the dorayaki are ruined. Doraemon angrily returns to the future with Dorami for a medical checkup, but while at the hospital he accidentally swaps bodies with a dangerous fugitive robot named Denja. Taking advantage of Doraemon’s appearance, Denja escapes and heads toward Nobita in the 21st century, while the real Doraemon, trapped in Denja’s body, desperately tries to return home and warn everyone before it’s too late.

It's the birthday of the cat-shaped robots, and Dorami and Sewashi are searching a present for Doraemon in the 22nd century. But during a chain of gas attacks on the cat robots under a scheme to replace them with dog robots, Dorami is wrongfully taken away, so Sewashi goes to the dog robot factory to protest against the decision. Back in the 21st century, Nobita gets a new robot companion, Wonderful, who watches over him as he does his homework. A group of breakaway cat robots led by Pawaemon take Doraemon into hiding, but when the latter accidentally causes the others to get sent to scrap, he is left on his own as Nobita goes back to the future to save Doraemon and all the cat robots.

On the first day of school, Nobita panics because he still hasn’t finished his summer homework. Using Doraemon’s “What-If Phone Booth” without permission, he creates a world where nobody is allowed to scold anyone. At first Nobita loves this carefree world, but when Doraemon travels to the 22nd century for his birthday reunion, he discovers the rule has affected the future as well, where scolding is now illegal. After accidentally reprimanding some children, Doraemon is arrested and sent to a robot detention center. Nobita must then find a way to save him in an emotional story about their friendship and bond.

On Doraemon’s birthday, Nobita wants to give him a special surprise gift and becomes interested in finding a rumored rainbow-colored butterfly. After returning home disappointed by Gian and Suneo’s prank, he discovers Doraemon repairing a machine that can travel underground. Suddenly, a mysterious masked girl named Lapis appears and drags Nobita and Doraemon into an underground treasure hunt, claiming to be a genius scientist from space. Meanwhile, Dorami learns that Doraemon may have been kidnapped by a dangerous criminal and teams up with the future police to track them down. The adventure soon turns into a thrilling underground mystery involving hidden treasure, the rainbow butterfly, and Lapis’s true identity.

On the night before Doraemon’s birthday, Nobita plans a surprise birthday trip with Dorami, Shizuka, Gian, and Suneo while his parents are away. Using a special gadget, Nobita’s house transforms into the “Nobita Express,” a fully functioning train driven by Nobita himself. The group enjoys the journey until mysterious train hunters from the future steal the train with Doraemon, Shizuka, and Gian still inside. Nobita and a sheep conductor then set out to rescue their friends and recover the stolen Nobita Express.

Nobita, inspired by Suneo’s stories about Egyptian pyramids and hidden treasures, decides to travel to Egypt with Doraemon using futuristic gadgets like the Anywhere Door and Time Belt. There, they discover a royal tomb and meet Nemses II, a young pharaoh who reveals he was betrayed and trapped by a usurper named Warueheb. After bringing Nemses back to the present to understand the situation, Nobita and his friends (Shizuka, Gian, and Suneo) return to ancient Egypt to help him reclaim his throne. They soon realize Warueheb has used Nobita’s lost Future Diary to gain power and control over the kingdom. An epic adventure begins as they try to restore justice and save Egypt.