Three months after Joseph Stomper broke the laws of his people to save the Spirit Breather, he pleads with Onaconah, the Nunnehi war chief, to send him back among humans to protect Emily Morrow. But with a centuries-old grudge between them, Onaconah first challenges Joseph to complete a deadly mission without the use of Nunnehi magic or weapons. With Joseph's immortal life on the line, failure is not an option. But when his own mission jeopardizes...