A diminutive president from a distant planet flees to Earth to evade capture by a tyrannical military regime. Embraced by Doraemon, Nobita, and their companions, the tiny alien realizes his foes have trailed him to this new sanctuary and resolves to shield his human allies from the ensuing conflict. Together, Doraemon, Nobita, Gian, Suneo, and Shizuka embark on a grand escapade, striving to safeguard and conceal Papi amidst the looming threat.