The story begins with Nobita in school, reading about the clouds. Then he asks his teacher, "Does Heaven really exist?" Everyone started laughing, even Shizuka. He persuades Doraemon to take him to Heaven and get some proof. But Doraemon insists on making their own Heaven. They invite Gian, Suneo, and Shizuka and they begin to make their own Heaven. Eventually, their Heaven is lost and they land in another place in the clouds. There they find new friends. Eventually, Gian, Suneo, and Shizuka lose contact with Doraemon and Nobita. Some poachers got into their own Heaven and they meet Doraemon and Nobita. There they capture them and eventually, Gian, Suneo, and Shizuka also get captured. Then they declare war with the other kingdom and destroy their Energy State. After hearing this, Doraemon unleashes his full power and crashes into the energy source of their own Heaven and it is destroyed. Doraemon is dead and Nobita, Gian, Suneo, and Shizuka are held prisoners in the other kingdom but eventually, Doraemon comes back to life and they return to Earth
- The opening animation was made entirely in CGI.