When news of disappearing bird species spreads, Nobita and his pals convene at Shizuka's place. Convinced that winged beings are behind the vanishing, Nobita fixates on flight, crafting mechanical wings. In a daring test flight, he stumbles upon a real winged creature emerging from a time-space rift. Assisting this creature named Gusuke, Nobita and his friends are whisked into the anomaly, landing in Birdpia, the mystical realm of these winged creatures.