The peace of Estora is shattered when the Six Shadows, formidable warriors corrupted by dark magic, wage war on its territories. The Shadows, each commanding vast armies, have a single mission: to capture the Great Sword and harness its unparalleled power to plunge the world into eternal darkness.
Unbeknownst to the Shadows, the sword chooses its wielder. And it chooses Aria, a seemingly ordinary girl with an innate talent for smithing and a heart brimming with courage. As the massive blade binds with her, she discovers she can shrink it to a manageable size or expand it to its full, magnificent length at will.