In the future, a vast starfaring society has been established by humanity. However, the community is suffering from melancholy and monotony as they are continuously conquered and dominated by an aggressor. To fight against this widespread apathy, Herlock decides to take initiative and rally a group of rebels aboard his spacecraft, Arcadia, to launch daring attacks on those who oppress Earth. The invaders include the Mazone, a species of organic, plant-like women who had visited Earth in the distant past and have come back to claim it as their own.
