Undina Base is under attack by an alien race called the Wulgaru. With the heavy losses suffered by the UPI, the evacuation of the base is ordered. Meanwhile, in a mock combat, the Military Junior Pre-Academy (MJP)'s Team Rabbits perform miserably as usual, getting the worst grades once again and regularly bickering among themselves. They are summoned into action, with new mecha powered by the JURIA system which is synched to their DNA, to hold off the Wulgaru forces while the Undina Base is being evacuated. When the UPI consider their mission accomplished, Rabbits team leader Izuru notices there are still civilians left on the base and with no vessels available to evacuate them, Izuru and the Rabbits fight off the Wulgaru fleet until the latter retreats.