The story of two true men plays out on the grim stage of space. Warrius Zero is a disgraced space captain from the Earth Federation. He lost all hope along with his family and the war against the Machine Men. His opponent is Captain Harlock, a space pirate who has refused to surrender to the Machine Men alongside the rest of humanity. The weapons they fight with are respect, honor, and bravery. Their battle will change the destiny of mankind forever.