After saving his brother, Jacob Reckless faces death from the fairy's curse burning in his heart.

In search of a cure he returns to the Mirrorworld, where he is reunited with Fox, a beautiful shape-shifting girl.

He has one more chance: a golden crossbow, with the power to both save and destroy life, buried in a dead king's tomb beneath an invisible palace.

Jacob must cross continents, face monsters and men \- including a dangerous rival \- and learn what it means to stay alive.