Suneo was overjoyed when his father gifted him a ticket for a space voyage, but he knew the journey was still far off. To find a solution, Nobita and his gang turned to Doraemon for help. The clever robot suggested playing a space simulation game. Unfortunately, a mishap with another gadget caused Suneo and Giant to get trapped in the game and only an extraterrestrial could rescue them. This spurred Nobita, Shizuka, and Doraemon to pursue the UFO transporting the game and embark on an authentic space adventure.