Before eradicating humankind from the world, the gods give them one last chance to prove themselves worthy of survival. Let the Ragnarok battles begin.
While Nobita is sleeping, he suddenly feels the floor is trembling, like there would be an earthquake in his room. A little rabbit from an alternate universe named Chamii opens the door between the dimensions using a hammer and gets inside Nobita’s room through the floor. Nobita wakes up and Doraemon hears somebody steal food from the fridge in the kitchen. It is Chamii, who gets caught by Doraemon and Nobita. She shows them the passageway through Nobita’s floor into the spaceship. After they enter the spaceship, they see Koya Koya Planet. They meet a boy named Roppuru.
Nobita and Doraemon use time tree Mochi and catches a big bird Moa, which has been extinct for 500 years ago. To protect extinct the animal, Nobita and Doramon go to Beremon Island which is protected by a golden beetle named Herakles. They meet a girl from the Rokkoro tribe and a boy who looks exactly like Nobita on Beremon Island …
While Doraemon is asleep, a famous thief comes and steals his cat-bell. Without his cat-bell, Doraemon starts to act more and more like a normal cat. In order to stop this, Nobita, Shizuka, Suneo, and Gian have to go and search for his bell, so they go to a factory where all of Doraemon’s gadgets are made.
The film takes place one year after the events of the anime series. After going through a painstaking journey across multiple ‘World Lines’ due to the invention of ‘D-Mail’, text messages that can be sent to the past, Rintarou Okabe has assumedly landed in the “Steins Gate” World Line, in which none of his friends would have to die and a future ruled by SERN due to the invention of a time machine no longer exists. However, Rintarou soon starts feeling the side effects of his constant time travelling across multiple World Lines, which soon builds up and causes Rintarou to suddenly vanish from existence, with only Kurisu Makise, the girl who he had saved thanks to his efforts, remembering him through déjà vu. It is now up to Kurisu to find a way to get Rintarou back.
Year 2116—The Japanese government begins to export the Sibyl System unmanned drone robots to troubled countries, and the system spreads throughout the world. A state in the midst of a civil war, SEAUn (the South East Asia Union), brings in the Sibyl System as an experiment. Under the new system, the coastal town of Shambala Float achieves temporary peace and safety. But then SEAUn sends terrorists to Japan. They slip through the Sibyl System and then attack from within. The shadow of a certain man falls on this incident. In charge of the police, Tsunemori travels to Shambala Float to investigate. The truth of justice on this new ground will become clear.
One day Doraemon, Nobita, Shizuka, Gian and Suneo were shooting a film as space heroes. When they were shooting the film in the open lot a boy called Aron comes and alerts them of aliens attacking his planet. They agree to help him by turning into real superheroes, but it isn’t as easy as it looks.
This film is a remake of the 1989 Doraemon Movie 10: Nobita no Nippon Tanjou. Nobita and the gang run away from home, traveling back in time to 70,000 years ago before Japan was even born. After a while, they return to the present. However, when they bump into a young caveman, Kukuru, who they have accidentally transported forward to their current era, they realize they must take him back to the primitive age. On top of that, they will have to save Kukuru’s tribe, called the Hikari tribe, which was attacked and abducted by the Giganzonbie and Kurayami tribe.
Unable to endure the midsummer heat, Doraemon transports Nobita and his friends to a huge iceberg floating in the South Pacific. While creating an amusement parks with the secret tool “Ice-working Iron” the group finds a mysterious golden ring in the ice. Upon closer examination, they determine that the ring was buried in Antarctica 100,000 years ago – before people could have lived there. Doraemon and friends head to Antarctica looking for the owner of the ring and come across the ruins of a huge city buried in the ice. Using Doraemon’s Time Belt, the group travels back 100,000 years ago and meets the young girl Kara who is connected to the mysterious ring. But now the group must fight for survival as Doraemon faces the crisis of the entire Earth freezing.