A rescue mission turns into a fight against a force more powerful than they could have imagined. With the amulet still stuck around her neck, Addie must outwit her powerful captors who will do anything to get to the power held within the ancient artifact. If they find out she doesn't know how to use it, she's dead. Meanwhile, Clark and a ragtag team of Addie's friends dive into a strange and dangerous world as they pursue those who took her. High-tech pirates, ruthless societies, and terrible secrets bombard them on their journey. As they discover more about their world and about each other, friendships are tested and trust is strained. Can they do what must be done without breaking the bonds that held them together for so long?