The war-torn continent of Ausia is plunged into chaos when from beyond the world come otherworldly invaders called Void-walkers. Faced with extinction, the ten Kingdoms abandon centuries of hatred and vow to fight alongside each other.

Among them, the kingdom of Valkyria suffered the most intrusions. Their land cut half its size, while their people flee in despair every year. And as they stood at edge of annihilation.

Everything changed, when a single child was born.

Freya Valkya.

At age where other girls played with dolls, she led her kingdom to its first victory. None could believe it. Valkyrien people called her -- Sword of victory.

But... What would happen when she is betrayed by the same people? As the wheel of time turns upon Ausia again, its fate shall be changed forever.