In the near future, an overpopulated humanity sets out for the stars in search of a new home. While that effort is still underway, the moon's alignment sets off massive earthquakes that shake the planet for several decades and devastate the human race. Once the land recovers, people return to a world that feels both strange and familiar, and they must ask whether they are still its masters. This single-episode ONA blends mecha, horror, mystery and sci-fi thriller elements.