When nineteen-year-old munitions worker Cassie Taylor leaves Birmingham to become a land girl in Dorset, she assumes she will be in for a quiet and boring time.But when she arrives at the Denham family's farm, she meets Robert and Stephen Denham, army officer twins still convalescing after being wounded at Dunkirk.At first, Cassie is drawn to lively, friendly Stephen, but then she falls deeply in love with his brother, Robert. When Robert returns to active service, Cassie joins the ATS, and when she meets him again in Alexandria, he asks her to marry him.Robert is reported missing in action and now Cassie finds that Stephen expects to take his brother's place in her heart. How will it all work out?