In the future, humanity has slowed down to the point that everyone has become so content with their lives, that they no longer bother to dream. In this time, those with dreams took to the sky to explore the sea above.

It's the year 2977. After a strange black sphere crashes on Earth, Tadashi Daiba's father is killed when he tries to discover what the mysterious object is.
Tadashi is asked to help defeat these new foes by an outlaw, the simple space pirate Harlock. And together Captain Harlock promises to protect Earth, the place that turned its back on him, against these new enemies.