On a planet in faraway galaxy, said planet practices a bizarre religion that involves rituals that revolve mainly around virgins. So, it is no surprise when Cacao and Parfait, a pair of nubile young Holy Virgins, are called upon to travel across the galaxy to retrieve the Fourth Warrior, Ramunes. However, when the two discover Ramunes, he is heading an invasion fleet with the intention of eventually controlling the entire galaxy. Fortunately, these virginal heroines have some spunk, and don mechas they have no idea how to operate in order to save the universe from its greatest hero.