Synopsis: For his summer project, Noby decides to create a world of his own using the “World Creator Set.” The rest of the gang join in, and together they learn about Earth’s history and the development of mankind. The project progresses despite Big G and Sneech’s lack of contribution, and Noby makes an amazing discovery: the “bug bites” on his bottom turn out to be tiny arrows, revealing the existence of miniature creatures with a high degree of civilization and intelligence. What has happened in Noby’s world? And who is responsible for Big G and Sneech’s sudden disappearance? The 15th tale of the Doraemon’s Long Tales series is bound to stimulate your creative instincts!