The war between the human empire, Gredian, and the Fey kingdom Atrelia has lasted for five decades and shows no sign of slowing down. Lieutenant Colonel Chais Nevermoon of Gredian, accused of treason, is going to die. That is, until a member of the Fey forces appears unannounced to save him. Chais and former enemy General Elwood Zefire embark on a secret and perilous journey back to the Fey kingdom.
The war between the countries is minor compared to the existential threat both empires face from mysterious and powerful forces from the other world. The seals separating the two worlds are cracking and at risk; it is soon apparent that the danger Chais and Elwood are facing is far greater than what either of them could imagine.