For years, the Sablum Empire has sought to conquer Windland. Now, collaborating with mercenaries Sister Hell and Darkness Knight, they plan to unleash Angels, formidable magical creatures, in a new offensive. Hyaweh, a skilled yet easygoing swordsman, and Priecia, possibly the kingdom's missing princess, enroll at Windland's Knight's Academy to master both combat and magic. Surrounded by comrades and mentors, they prepare to defend their land from the imminent threat.