All Savannah has ever wanted is to join the Moon Guard. They are the elite of the shifter world, trained to keep the peace. But joining their ranks is a challenge in itself, as a crash-course in fighting defeats the vast majority of applicants. She faces impossible challenges along with twenty-three other hopefuls, designed to split the weak from the strong. Meanwhile the thirteen families of the Free Isle fight a shadow war over the throne, which threatens to destroy everything she cares about. Savannah doesn't even just have werewolves to worry about. In the far north, the Shadowcats are gathering in force. A war is coming, it's just a question of who will start it. After learning of a conspiracy against the monarchy and her comrade, the young and charming Prince Kaeden, Savannah faces the ultimate choice between love and duty.