Hibiki Tokai is a third-class citizen who is a parts mechanic. When he boasts to his co-workers that he can and would steal a Vanguard, which is one of the Empire's elite combat vehicles used for defending themselves against the Mejale, he finds himself boxed in by his own words. In order to silence his doubting co-workers, he has to sneak abord the battleship Ikazuchi and find the Vanguard with the marked part on it that makes it his. However, everything doesn't go as planned, as the Ikazuchi takes off for orbit 2 hours ahead of time with Hibiki stranded on board. As if things couldn't get any worse, the Ikazuchi also comes under attack by a group of fearsome women from Mejale - and not just any Mejale women, but pirates!

Found out by the Tarak crew and facing execution for being a stowaway, Hibiki comes face to face with a real live woman in the midst of all the fighting, who he immediately runs away from, despite her overly friendly attitude. But the real threat may not come from th