Doraemon Movie 22: Nobita to Tsubasa no Yuusha-tachi

After hearing reports about mysterious bird people, Nobita becomes determined to fly under his own power. His experiments soon lead to a far stranger discovery when Gusuke, a young winged boy, emerges through a dimensional passage. Following him home carries Nobita, Doraemon, and their friends into Birdopia, a hidden world inhabited by bird people.

Gusuke dreams of flying freely despite his difficulties in the air, but Birdopia is facing a danger far greater than any race. As hostility toward humans grows, a ruthless commander seeks to revive the ancient creature Phoenicia and unleash it upon the human world. Trapped between two worlds, Nobita and his friends must help Gusuke find his courage and stop a disaster before the skies become a battlefield.