There was a time when Earth's resources were depleted due to overpopulation. Consequently, colonists were dispatched to the Moon, where they were forced to perform hazardous and demanding mining work. Their labor proved lucrative, as Earth's inhabitants now thrive on the Moon's bounty—yet the colonists' existence remains fraught with terror. When an extremist faction kidnaps Melinda Hearst, the girlfriend of a government official, tensions on the Moon reach a breaking point. Third-generation colonist Shun Nonomura wrestles with the decision to either stay out of sight or join the rebellion. Meanwhile, in the distance stands Dallos, a mysterious structure that could alter the trajectory of Lunar history.