Not all knights wield armor and swords; some are capable of summoning ethereal weapons known as "Animas". And if you are strong enough, you might be able to join the legendary Knight's Order. As part of the Knight's Order, your duty is to protect and serve the people. Theresa, however, has her own goals, and that is to find the white-haired knight. She'll make any sacrifice to do so. But what will she do when her pursuit for a single silver thread unravels the entire fabric that hides a sinister truth about knights and the world that they live in?