Doraemon, Nobita and his friends go to find Utopia, a perfect land in the sky where everyone lives with happiness, using an airship having a time warp function.
One day during summer vacation, a palm-sized alien named Papi appears from a small rocket that Nobita picks up. He is the president of Pirika, a small planet in outer space, and has come to Earth to escape the rebels. Doraemon and his friends are puzzled by Papi’s small size, but as they play together using the secret tool “Small Light”, they gradually become friends. However, a whale-shaped space battleship comes to earth and attacks Doraemon, Nobita and the others in order to capture Papi. Feeling responsible for getting everyone involved, Papi tries to stand up to the rebels. Doraemon and his friends leave for the planet Pirika to protect their dear friend and his home.
Nobita travels to the future to show his beloved grandma his bride, but adult Nobita has fled his own wedding.
Nobita accidentally finds a fossil dinosaur egg mixed with rocks in the dinosaur fossil exhibition site that he had visited before. He returns it to its original state with the 'time blanket'.
Oohara Megumi is a voice actress (seiyuu) from Tokyo, Japan. She's 156cm tall and has type O blood. Her hobby is cooking and the appreaciation of music. She's a qualified beautician, and speaks English. Oohara is married and has a dog. She has worked as a maid in a maid tavern.