After vanquishing the malevolent Dark Fact and bringing peace to Esteria, Adol Christen embarks on a new journey with two priestesses to the mystical floating realm of Ys. Here, a pervasive darkness shrouds the land, stripping its inhabitants of hope. As the bearer of priestly abilities, Adol shoulders the destiny of Ys, tasked with illuminating its inhabitants with the harsh realities they face. Yet, as Adol's powers burgeon, the line blurs between him becoming Ys' savior or its undoing.