An exciting cyberpunk romp directed by Rintaro with veteran animator Kanada Yoshinori about a genius hacker and a gang of hot-rodders.

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.

Papi, the tiny president of a faraway planet, escapes to Earth to avoid being captured by the military forces that took over. Despite being welcomed by Doraemon, Nobita and their friends, the little alien notices that his enemies have also reached this world and doesn't want to get his human friends involved in this war. Doraemon, Nobita, Gian, Suneo, and Shizuka start a big adventure as they try to hide and protect Papi. (Source: ANN)

The plot revolves around a summer vacation of Nobita and his friends under the waters of Pacific Ocean. Jaian and Suneo take Doraemon's underwater vehicle and travel through the Atlantic Ocean, trying to find a treasure ship. Along the way, they discover that the environment gun that Doraemon used to protect them is running out of energy leaving them vulnerable to the sea. Fortunately, they are rescued by some marine creatures. Doraemon and his friends are later captured by these creatures, revealed to be inhabinats of the underwater kingdom of Mu. It is revealed that another undersea kingdom, Atlantis, now controlled by robots, was about to destroy the Earth with nuclear weapons after mistaking a volcano eruption for an invasion. With the help of a young boy from Mu, Nobita and his friends attempt to stop the robots, but are all captured. However, when things are at their grimmest, Doraemon's robotic underwater vehicle sacrifices itself to destroy the computer that controlled all the robots and nuclear weapons. After returning to Mu, Doraemon and his friends are hailed as heroes. (Source: Wikipedia)