Overview
, also called Farewell to Space Battleship Yamato or Arrivederci Yamato, is the second film based on the classic manga and anime series Space Battleship Yamato (known as Star Blazers in the United States) and the sequel to Space Battleship Yamato (1977).
Set three years after the events of the first film, Yamato must protect Earth from another tyrannical alien race in the form of the White Comet Empire, who prove to be a much griever threat. This same storyline would be reused and expanded on later in the same year on TV in Space Battleship Yamato II, albeit with a different ending.
Plot
Three years after their destructive war with Gamilas, humanity has largely recovered. Meanwhile in the distant reaches of space, the tyrannical White Comet Empire led by the Emperor Zordar sets its sights on Earth to conquer and enslave mankind. Dessler, leader of the Gamilas, is revived by them and pledges his loyalty. He vows revenge on the Yamato under the supervision of Comet Empire officer Miru.
From Wikipedia (CC BY-SA 4.0).