In the near future, the human world has long been overcrowded, making the journey toward the stars and the search for a new home increasingly urgent. Just as everything was progressing in an orderly manner, the lunar phase shifted anomalously, triggering decades of violent geological upheavals on the land beneath our feet. Humanity was nearly wiped out in this catastrophe. As the world gradually regained its calm, people emerged from the ruins and abyss to set foot once more on this familiar yet alien land. Are we, who have grown accustomed to dominating everything, still the masters of this world?