The synthetic planet EARTH II has been infected by a Cyber Moon—a parasitic body from outside the solar system that is converting the planet's matter into red material for the moon to consume. An engineer named Sensei Hazuki has identified a vulnerability in EARTH II's light system that can be exploited to manipulate physics itself, and has dispatched her best student to take advantage of it. Equipped with LIGHTFORCE AMULETS that power teleporters and high-tech armor, the Lightforce Ninja must destroy the Cyber Moon's power core before the planet is completely drained.