Herlock stands alone against everything, even the plot trying to explain why. This OVA doesn't ask you to follow the story, it asks you to watch a man who has already decided what matters and never wavers from it. The narrative pieces don't fit together cleanly, but that fracture is the point: you're seeing fragments of a legend, not a beginning.
On a scientific expedition to the edge of the known universe, Professor Daiba accidentally sets loose an ancient evil that had been sealed away. Five years later, that hostile alien power puts a scheme into motion. Its plan draws the scattered members of the Arcadia's crew back together to travel the stars again, and it brings Tadashi Daiba face to face with Captain Harlock for what is, once again, the first time. This thirteen-episode OVA is a science fiction action story set among the stars.