As the sun sets on the small town of Nobita's neighborhood, the gang receives a mysterious message from Doraemon about a hidden paradise known as Sky Utopia. This enigmatic haven is said to be located in the sky, where everyone lives in perfect harmony and bliss. Intrigued by the prospect of such an ideal world, Nobita and his friends – Shizuka, Suneo, and Takeshi – set out on a thrilling adventure with Doraemon's help. Equipped with Doraemon's innovative airship, capable of manipulating time, the group embarks on a journey through the skies. As they soar above the clouds, they encounter a series of surreal landscapes and bizarre creatures, further fueling their excitement about reaching Utopia. Upon arrival at Sky Utopia, the friends are struck by its breathtaking beauty. The city is surrounded by towering crystal spires, with lush greenery and vibrant flowers covering every inch of ground. Every resident lives in perfect unity, working together to maintain the harmony and balance of this idyllic society. However, as they delve deeper into Utopia's world, the gang begins to uncover hidden secrets beneath its seemingly flawless surface. Nobita, ever the curious and adventurous soul, starts to explore the mysteries of Sky Utopia, discovering that the perfect paradise is not without its challenges. As he delves further, he realizes that the utopia is actually a result of an ancient civilization's technological advancements, which have created a self-sustaining ecosystem. Meanwhile, Doraemon and his friends face their own trials as they confront the enigmatic leader of Utopia, who harbors secrets about the city's true nature. As tensions rise, the group must work together to unravel the truth behind Sky Utopia and its inhabitants' extraordinary existence.