Entering orbit, Japan has fully transformed into its battle form to repel the alien armada. Meanwhile, Kazuyo Nakadai wrests control of the X-O Commando Armor from its spider alien owners and sets off to save her son Takashi. Back on Japan, as the battle begins, Solar is spotted and brought onto Japan. Things go from bad to worse when Grand One's head is boarded!
Synopsis: Fighting against incredible odds, Rai and Magnus attempt to defend Grand One from the spider aliens. When all seems lost, Kazuyo appears and buys time for Solar to unleash a devastating assault upon the invaders. When the remaining armada flees, Solar follows them, going supernova and sacrificing himself to prevent further invasion. In the aftermath of the battle, Grand One announces that it is leaving Japan and control will once again lie with a human government.