Kiera Oliva has traveled the world, chasing the globe and completely unaware that her mother was once a Valkyrie, a warrior for the gods, who left that life far behind to raise her daughter away from it. But you can never out-run what you are. Chosen by the ravens who send Valkyries in search of her, Kiera will have to learn fast what it takes to become one of the Valkyries or fall.