When a family discovers a diary, written in Kassel, Germany, during the height of World War II, they are unprepared for the revelations that are contained in its pages. Day by day, Klara carefully told her only companion all of the secrets that would otherwise have been lost to time. With little choice and no options, Klara Mauer leaves behind her most prized possession, her siblings, and travels to bombed out Kassel to find employment. There she must navigate its treacherous political landscape that daily threatens to reveal who she is. Through twists and turns of providence, she crosses paths with the handsome and highly decorated Nazi officer, Major Rager. Major Kurt Rager, a well respected officer in charge of Kassel's armament production, carefully guards his reputation while conducting the business of war. His confidential dealings, strategic responsibilities, and connections with top officials in Berlin make it only a matter of time before he will fall under suspicion. During the course of her employment, Klara learns that the major is playing a high-stakes game of cat and mouse with the Nazi war efforts and is holding a secret that will alter the destiny of their lives forever. When trust and treachery collide, Klara must decide how far she will go to protect the ones she loves.