The "Holy Sword"—a blade of immense power—is said to summon a worthy wielder once every hundred years. As the Holy Kingdom of Narsalime prepares for an impending great war, they seek the next "Holy Sword Wielder." The top candidate is Will Libertas, a young man hailed as a descendant of heroes and renowned for his exceptional swordsmanship. Under the watchful eyes of the king and court, Will steps into the "Chamber of Rituals," where the Holy Sword awaits. Finally, he reaches out to grasp the sword—but what fate awaits him? Thus begins a grand, high-stakes "first mission" that will determine the destiny of the entire kingdom!