The  Sablum Empire has been attempting to take over the  Kingdom of Windland for many years, and are now plotting with the mercenaries  Sister Hell and  Darkness Knight to start a new offensive using powerful beings called  Angels.  Hyaweh, a carefree yet talented swordsman, and  Priecia, who just might be the lost princess of Windland, are enrolled at the  Knight's Academy in Windland to hone their skills in swords and sorcery. There they meet many friends and allies who can help them protect their homeland from the impending invasion.