LAST EXILE: GINYOKU NO FAM - OVER THE WISHES

The film takes place two years after the original Last Exile. Humanity has returned to Earth after an exile that lasted generations, and the only nation that remained on Earth during the exile is now waging war on those that have returned. The story follows sky pirates Fam and Giselle, who rescue a princess and join her in saving her kingdom and bringing about peace. — Description from AniList community (anilist.co).