At some point throughout summer time trip, a palm-sized alien named Papi seems from a small rocket that Nobita picks up. He's the president of Pirika, a small planet in outer house, and has come to Earth to flee the rebels. Doraemon and his pals are puzzled by Papi’s small measurement, however as they play collectively utilizing the key software “Small Mild”, they step by step grow to be pals. Nevertheless, a whale-shaped house battleship involves earth and assaults Doraemon, Nobita and the others with the intention to seize Papi. Feeling answerable for getting everybody concerned, Papi tries to face as much as the rebels. Doraemon and his pals go away for the planet Pirika to guard their expensive buddy and his residence.
