Resurfacing the centuries-old key, Diana Holland finally comes to the conclusion she has been dreading: The Hunters are back. As her fears start to turn into reality, she is forced to face her enemy, Emerus, to stop him from taking over the world. With a hunt for their brethren, Diana, Kingsley, Matt and Bat are out for a search to find the source of this evil. But things are complicated as Diana's emotions grow stronger for her insanely gorgeous captain, Kingsley Scott. The road to victory is hollow as Diana comes face-to-face with heart-shattering truths.