In the winter of 1952, newly wed Isabel Carey arrives in a Yorkshire town with her husband Philip. As a GP he spends much of his time working, while Isabel tries hard to adjust to the realities of married life. One cold night, Isabel finds an old RAF greatcoat in the back of a cupboard. She puts it on her bed for warmth - and is startled by a knock at her window. Outside is a young man. A pilot. And he wants to come in.