The story takes place in a parallel world to the original work, where not only Doraemon, Nobita and their friends exist, but also some new props and characters have been added. The main change in this parallel world is that Doraemon's four-dimensional pocket accidentally lost some of its abilities. He needs to find the missing props and repair the function of the pocket. In the process, Doraemon, Nobita and their friends will embark on a new adventure. They will travel to mysterious future cities, dive into deep-sea exploration, and enter a fantasy world in the air, facing various unknown challenges and dangers. In their new adventure, they encounter strange creatures and robots from the future and other parallel worlds, while they also learn more about the value of friendship, courage and responsibility.
