In the year 2387 on the planet Maris, a deadly threat emerges as the Nozas embark on a genocidal mission to eradicate humanity and claim the world for themselves. To combat this menace, three enigmatic firearms known as the 'Zillion Weapon System' surface, selecting three young individuals – JJ, Champ, and Apple – as the valiant White Knights. Tasked with wielding these powerful weapons, the trio must unite to stand against the Nozas and protect their home planet.