In a realm consumed by rival empires and kingdoms locked in a perpetual struggle for supremacy, the fate of young Prince Abel intertwines with the arrival of a mysterious woman from a highly advanced type 4 civilization. As his kingdom teeters on the edge of collapse amidst a brutal civil war, Abel's encounter with this enigmatic figure sets in motion a series of events that will forever alter his life and shape the destiny of his people.

Stricken by a sense of compassion, Abel extends a helping hand to the wounded woman, who introduces herself as Seraphina, a traveler from a realm far beyond the reaches of his understanding. In exchange for a place to recover from her injuries, Yumiezo offers Abel an extraordinary proposition—a chance to elevate his type 0 civilization to the coveted status of a type 2, a civilization capable of harnessing the immense power of their own star.

Driven by a potent mixture of desperation and hope, Abel accepts the challenge. Bound by a promise and united in purpose, he and Yumiezo embark on a journey that transcends the boundaries of their war-torn world. As they traverse treacherous landscapes and navigate the intricate webs of political intrigue, they encounter allies and adversaries alike, each with their own agendas and desires for power.