Prince Auren of Eldenmere saves Riven, a wounded Fae from the enemy kingdom of Vrethia, and falls into a forbidden bond that threatens both crown and country. Forced to return home, Riven takes the throne, changes Vrethia’s laws, and offers Auren a future at his side. But when Auren refuses to become the prize of Riven’s revolution, love turns into invasion. To stop the war, Auren crosses into Vrethia—promised consort, sacrifice, and blade at Riven’s throat.