Doraemon: Nobita at the Birth of Japan

The 36th Doraemon movie . This is a remake of the 1989 film Doraemon: Nobita no Nippon Tanjou . Nobita wants to run away from home, again. He finds out that there is nowhere for him to go. All the land is owned by someone. His friends end up wanting to run away also, even Doraemon. They figure out that the only way to find land that isn't owned by anyone is to go back in time to when no humans existed. They end up helping a prehistoric boy rescue his tribe from Gigazombie.

Nobita finds a fossilized dinosaur egg by accident, and with the help of Doraemon's tools, they hatched the egg and began raising the dinosaur. Knowing that they can't keep the dinosaur forever, Nobita was forced to send it back to prehistoric times where a group of hunters from the future threatens to endanger the dinosaurs. Determined to save the dinosaurs from the claws of the hunters, Doraemon and the gang returns to the past and sets out in a prehistoric adventure.

Doraemon and its friends open a hole in the time and they're travel to the Country of Mayana, a lost Mayan civilization in the jungle. There, Nobita will know its perfect double, prince Thio, heir to the throne. Both will decide to interchange papers to try to save to the Country of Mayana of the claws of the infernal Ledina witch and her evil forces.

The movie is sort of a prequel to the entire series, it showed the life of Doraemon before traveling to the 20th century: How he was made, how he was partially broken, how he lost his ears, how he met the Nobi family and decides to return to the past to help Nobita.