Nobita, the perpetually unlucky schoolboy, discovers a mysterious, half‑buried while playing in a park. Using Doraemon’s “Anywhere Door” and “Time Machine” , the trio (Doraemon, Nobita, and Shizuka) travel to a distant future where they encounter a war‑torn world ruled by a powerful robot army known as the Steel Troops .

: The robot’s brain is transformed into a small, chick-like creature named Pippo who develops a deep bond with Nobita. Emotional Weight

Riruru’s internal conflict—choosing between her programmed mission and the kindness shown to her by Shizuka—is the heart of the film.