On what should be the biggest night of her life, everything goes horribly wrong.

Sergeant Major Scratch Keyes of the King's Guard is having a bad night. First, her king denies her the promotion she rightfully earned, as well as the knighthood that goes along with it. And then, when Scratch is wallowing somewhere near the fetid rock bottom, she and her best friend, the flamboyant and carefree Sergeant James Ursus, are arrested for orchestrating the abduction of Princess Frances and sentenced to death. On the whole, things could be better.

Luckily, help comes in the form of the mysterious Shae siblings who inform the doomed pair that the issue of the missing Princess is far more complicated than it appears. After a daring escape, the four embark on an ill-advised rescue mission through a forest filled with beasts, bandits, and mysterious fair folk, bringing nothing with them but a kitchen knife and the vague outline of a plan. Their destination is the Between, a sacred and shadowy fae-guarded place that promises to deliver Scratch and James to the princess—if they can survive.