A desolate sandy sea stretches as far as the eye can see, bathed in golden light. Albus and Ecclesia deepen their bond as they make their way along a treacherous path.Suddenly, mysterious flying objects attack them.These beings, with soot souls and steel bodies, are the Spriggans, treasure hunters who make this vast sandy sea their base.By chance, Albus and Ecclesia encounter the organization they were looking for, and at their base, the battleship Explorator, they meet Kit, the inventor sister of Felijit.Ecclesia asks Sargus, the leader of the Spriggans introduced to her by Kit, to protect Albus.Sargus then gives the two an unexpected task.

Having overcome their trials, Albus and Ecclesia are accepted as members of the Spriggans.However, their joy is short-lived, as the earth suddenly trembles and the monstrous Serpent Duke Gorgonda, who reigns over the Great Sand Sea, appears.The Spriggans and Ecclesia tremble at the sight of its colossal body that covers even the heavens. Furthermore, the wave of the brand emanating from Gorgonda's "Hole" causes Albus's power to run wild.He devours the power of the Hole, transforming himself into the fiery red dragon, Albion. Driven madby the tremendous power emanating from each other, Albion and Gorgonda throw themselves into battle, drawing everyone around them into the fray.Ecclesia rushes forward without regard for the danger in order to stop Albus.In the midst of the flames of war, the dragon and the girl meet again. Their bond now raises the curtain on a new story.

Elia, Heeta, Win, and Aus are four individuals striving to become full-fledged spirit users, each accompanied by their familiar.Elia finds a grimoire in the library. The four attempt to perform the great spiritual technique "Ichirin" described in it, but the balance of their spiritual power is disrupted, and the technique ends in failure.Disheartened, the four are guided by mysterious characters that appear in the grimoire to an ancient altar sleeping deep within the ruins.The door to an unknown trial was about to open...