Before the first war in a thousand years, Sylvia Thorne was just a normal sixteen-year-old girl, who happened to have one of the most dangerous jobs in the Four Cities. Delivering messages might not sound dangerous, but those who have traveled through the wilds between cities will tell you a different story—those who survive, that is. Sylvia is used to traveling the wilds for a living–and she will soon deliver the message that breaks the peace between the cities, but before that, she gets stuck in Lightcity, waiting for a package to deliver. Her wait for adventure isn’t long. A young girl named Maddy has run away into the wilds on a haphazard rescue mission—untrained in the ways of the wilds. Sylvia follows, hoping to bring her back in one piece. When Maddy brings them into one danger after another, desperate to find her missing parents, Sylvia must draw upon her training to protect the both of them. But a wolf pack lurking about is acting strangely, and something seems very wrong in the wilds of Arcera.