"We three Fossils vow to put our name in the history books, because it is ours, and ours alone…" With these words, three orphans, raised as sisters, embark on an exhilarating journey that takes them to the heights of the stage, screen and sky.
Pauline (Emma Watson), Petrova and Posy Fossil are adopted as infants by eccentric explorer Professor Matthew Brown, whom they affectionately call Great Uncle Matthew (or "Gum" for short). When "Gum" goes missing, his niece Sylvia keeps the family together by taking in lodgers and eventually enrolls the girls in the Children's Academy of Dancing and Stage Training. This suits the ambitious Pauline, who longs to act, and Posy, a natural dancer, but Petrova, who yearns to become an aviator, has her own dreams of soaring the skies. The girls' lives in show business are filled with triumphs and lessons learned until "Gum's" surprise return provides the perfect happy ending for them all.