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.
Doraemon the Movie: The New Record of Nobita's Spaceblazer (映画ドラえもん 新・のび太の宇宙開拓史, Eiga Doraemon Shin Nobita No Uchu Kaitakushi), also known as Doraemon: The Hero 2009 then later as Doraemon: The New Record of Nobita Spaceblazer is an anime film, released in Japan It's the 29th of Doraemon films series. It is a remake of the 1981 movie The Records of Nobita, Spaceblazer.
This is the first film released during the celebration of TV Asahi's 50th Anniversary. It was voted the No.1 Movie in Japan as of March 9, 2009. It ranked as the 4th highest grossing Japanese animated film in 2009.