In a distant, mysterious corner of the universe lies a planet that has taken an extreme path. Its history differs greatly from Earth's, while its technological civilization is much the same. One day, the world's end arrives without warning. Nature undergoes cataclysmic changes, the heavens and earth are transformed, and countless man-eating monsters descend, shattering civilization... At last, after enduring endless hardships and tasting sorrow time and again, the people come to understand that only by standing united and holding on to hope can they uncover the ultimate truth of the apocalypse and keep the lamp shining forever in the endless darkness.