The world is at war. And there's a similar tension in the heart of Lilly Clark. With the war in Europe raging, Lilly lives for letters from her beloved Reggie. But then a stranger enters her life and changes everything. Heinrick Zook has become the focus of controversy in Lilly's small South Dakota town. His ancestry stirs up hateful prejudices as American boys are losing their lives fighting the Germans. But even with this barrier between them, Lilly feels compelled to befriend this gentle German. Can their love overcome the prejudice and conflict that has set the world at war? Or will letters from the enemy forever condemn Lilly in the eyes of those she loves?