Pretty Guardian Sailor Moon Cosmos the Movie

Usagi sees Mamoru off at the airport: he is about to fly to America to continue his studies at a prestigious college. The farewell turns out to be not just sad but almost fateful, as Mamoru confesses his love and asks her to marry him. Usagi says yes, believing that a new life awaits them, even if they must spend it apart for a while. But these dreams are not destined to come true so easily.

Soon Seiya appears at Usagi's side, a dazzling stage star, handsome, with a powerful voice and a charm that makes fans of all ages lose their heads. He clearly takes an interest in her, but Usagi's heart still belongs to Mamoru. Meanwhile, a new threat gathers over the Earth: an unknown enemy is stealing people's Star Seeds, the crystals of the soul without which life is impossible.

The mysterious Sailor Starlights appear on the side of good. Who are they, allies or a new danger? While the girls try to figure it out, evil grows stronger. Mamoru never makes it to his studies: his journey is cut short by a clash with Sailor Galaxia. Now Usagi and her friends must embrace a new power and enter a battle on which the fate of the Earth depends. The outcome of this war will decide whether they have a future at all.