Usagi Tsukino and the Sailor Guardians face their toughest fight yet when Sailor Galaxia's Shadow Galactica begins hunting Sailor Crystals across the galaxy. The search falls to her Animamates: Sailor Iron Mouse, Sailor Aluminum Siren, Sailor Lead Crow, and Sailor Tin Nyanko. This two-part film adapts the Stars arc of the original manga, closing out the story that Sailor Moon Eternal left open, and it is the final chapter of the Sailor Moon Crystal film series.