Thousands of years after the moon crashed into Eurasia, in an era also known as the Age of Chaos, the only land on Earth that remained above sea level was around the Andes Mountains. Nuclear radiation spread across the land and oceans, the climate was harsh, and life was difficult for those who survived.
In modern times, sea levels have fallen and vast stretches of land have resurfaced. But with the appearance of these new lands, people from the moon have also arrived in the Andes Mountains.
Where there are people, there will be conflict. This story mainly depicts the relationship between two young nobles of that era, as well as the cultural clashes between the factions of Earthlings and people from the moon, leading all the way to war.