Doraemon has always longed for an ideal kingdom where people can become perfect and free of worry. He brings out a time-traveling Zeppelin and takes Nobita, Shizuka, Gian, and Suneo across different eras in search of the legendary dreamland.
Just as the group gives up and prepares to go home, a crescent-shaped island suddenly appears, floating in the sky. Their airship is attacked by a guardian robot named Sonia, and they crash. When they wake up, they find themselves in the paradise of Paradapia.
This place claims to be a perfect utopia: everyone wears a special badge, excels at studying and sports, and lives without arguments or conflict. Nobita is captivated and longs to become a model child here. But gradually
