Months after bonding with Rhys, Kai is finding her place among the Wingless-humans who have heartsworn to dragons. Determined to help her new people, she's delving deep into her magical training and is the first Wingless to ride into battle with her dragon mate. Going against customs as ancient as dragons, Rhys is forming his own vision for dragonkind. But the Council have plans of their own that don't include a Wingless queen. Meanwhile, the war with Owain is finally here and the fight for control of dragonkind could destroy everything-including humanity itself. When unbreakable bonds are torn asunder, Kai and Rhys will learn exactly how deep their love goes. The battle has begun, and no matter what happens, this one will be the last. If they can't come together, their lives are forfeit-as well as every other life they hold dear.