It's 1943, and the Second World War is raging. Ruby Mottram works for her local newspaper, the 'Bartonford Herald,' typing up adverts and obituaries, whilst dreaming of a more exciting life. Between her shifts as an ARP warden and caring for her ailing father, the chance for escape doesn't come often to Devon. Meanwhile, in America's deep south, Sam Archer is hatching a plan to raise enough money to get his mother and sister away from his abusive stepfather. Using falsified documents to hide his age, he enlists with the U.S. Army. Two chance encounters bring Ruby and Sam together from opposite sides of the Atlantic, giving them the chance of love, hope and freedom from their troubled lives. But fate, in the shape of D-Day and Omaha Beach, has other ideas. When their very lives are at risk, will their promise to wait for one another be what keeps them alive?