While Nobita is sleeping, he suddenly feels the floor is trembling, like there would be an earthquake in his room. A little rabbit from an alternate universe named Chamii opens the door between the dimensions using a hammer and gets inside Nobita's room through the floor. Nobita wakes up and Doraemon hears somebody steal food from the fridge in the kitchen. It is Chamii, who gets caught by Doraemon and Nobita. She shows them the passageway through Nobita's floor into the spaceship. After they enter the spaceship, they see Koya Koya Planet. They meet a boy named Roppuru.
Due to a warp in hyperspace, Nobita suddenly finds that the tatami (straw) mats in his room have turned into vessels that are able to fly through outer space. At the controls are a space immigrant boy named Ropple, and a rabbit from outer space called Chammy. The pair takes Nobita and Doraemon on a fantastic adventure to the scenically lush and verdant planet of Koya Koya, where they encounter Morina. Due to the lack of gravitational pull, Nobita finds that he is able to fly around like Superman. Learning of a sinister plot being hatched by the Galtite mining industry to take over the planet, Nobita enlists the help of Doraemon and his other friends to fight these forces in order to save Ropple and the others.
- Nobita Nobi
- Shizuka Minamoto
- Suneo Honekawa
- Takeshi Gouda
- Tamako Nobi
- Nobisuke Nobi
- Gian's mother
- Hidetoshi Dekisugi
- Pao Pao
- Time Furoshiki
- Dream Check Machine
- Spacesuit Pills
- Gyro Capsules
- Air Cannon
- Rebounding Cloak
|Character||Japanese voice actor|
|Nobita Nobi||Megumi Ōhara|
|Shizuka Minamoto||Yumi Kakazu|
|Takeshi 'Gian' Gouda||Subaru Kimura|
|Suneo Honekawa||Tomokazu Seki|
10 year old version: Yui Horie
|Mr. Burns||Kenyu Horiuchi|
|Tamako (mother)||Kotono Mitsuishi|
|Nobisuke Nobi (father)||Yasunori Matsumoto|
|Gian's mother||Miyako Takeuchi|
|Hidetoshi Dekisugi||Shihoko Hagino|
Names in other languages
Xīn· Dàxióng de Yǔzhòu Kāità shǐ
|Spanish||Doraemon the Hero: Pioneros del espacio||Doraemon the Hero: Pioneers in Space|
Differences between the original and the remake
- Dorami does not appear in the original 1981 version, but she does in this remake.
- A special DVD version of this movie was released on December 12, 2009. It included two bonus features, which were Nobita & Loppic and The Making of The Movie.
- In Hindi, this film is renamed to Doraemon: Nobita's Adventure in Koya Koya Planet.
- This movie has a lowest box office collection in all 2005 Feature Films.