Subterra

Earth is nothing but a distant memory to humankind now. Subterra is they place they know as home, an underground world, vicious and dangerous. When Dian is diagnosed with a disease known as "The Pale", Dryst, her brother and the Wielder, the only one who can use the ancient sword Mallbane to defeat the great evil Devordor who seals the entrance to Earth, will step up to his fate, to save his people and his dear sister.