Doraemon the Movie: The Records of Nobita, Spaceblazer

Nobita experiences recurring dreams about Roppel, a young boy, and his companion Chami, who are traveling through space. Fate intervenes, and Nobita encounters Roppel and Chami in person. They are real, and they are being pursued, leading to a malfunction in their space vehicle that connects it to Nobita's room. Together, they travel to Roppel's planet. While enjoying their time there, Nobita and Doraemon learn of the planet's oppression and commit to assisting Roppel in freeing his home from those who control it. The story focuses on their journey and the promise of liberation.