Nobita and his pals set off on a journey to discover Paradapia, a utopian realm akin to Thomas More's Utopia. Assisted by Doraemon's advanced tools and time-travel prowess, they delve into Paradapia's enigmas and tackle obstacles, clashing with the formidable bounty hunter Marimba. As they strive to unveil Paradapia's secrets, their quest culminates in a hopeful outcome, paving the way for exciting escapades ahead.