While investigating Planet Phantom as a possible future home for humanity, the Star Force instead finds the successor to the mythical Queen Gardiana, and the forces of both the Galman Empire and the Bolar Federation mobilize to capture her. The Argo itself becomes the flashpoint of the galactic war that has long been brewing between these mighty powers, and nothing can turn back the tide. Meanwhile, the human race counts down its final days. The sun's runaway nuclear fusion has begun to scorch the earth, and the Star Force still has not found another world fit for emigration. In the explosive rush to war, who will pause to help one tiny planet?