Set during the chaotic years of World War II, tells the story of the conflicted relationship between General Dwight Eisenhower and Kay Summersby, his Irish driver/aide, and the impact of that relationship on Mamie Eisenhower and her life in Washington during the war.

During World War II, General Dwight Eisenhower's wife Mamie knew the gossip: Ike was involved with another woman; his letters home were only tepidly reassuring. The relationship between Eisenhower and his driver/aide Kay Summersby moved from England to North Africa and then throughout Europe before and after the Normandy landing. At the end of the war, Ike is faced with the heart-wrenching choice between divorcing Mamie to marry Kay, or to pursue a political future. In the post-war years, as Ike returns to Mamie, Kay struggles to create a life and work of her own.