A fierce battle between good and evil rages on in the vast expanse of outer space, and the fate of our planet teeters on the brink. Neos Gold, the malevolent antagonist, launches her armies towards Earth with the sole intent of eradicating humanity once and for all. Tasked with defending our world from this impending doom is Iczer 3, the younger sibling of Iczer 1, and with the Earth's sole surviving battle cruiser as her only ally, the odds seem bleak. Yet, do not underestimate Iczer 3 - although still inexperienced, she makes up for it with unmatched zeal and a relentless drive to succeed.