It is the winter of 1952 when Isabel Carey moves to the East Riding of Yorkshire with her new husband, Philip, a medical doctor. While Philip spends long hours working away from home, Isabel finds herself lonely and vulnerable as she adjusts to the realities of being a housewife in the country. One evening, while Philip is on call, Isabel is woken by intense cold. When she hunts for extra blankets, she discovers an old RAF greatcoat hidden in the back of a cupboard. Sleeping under the coat for warmth, she starts to dream and is soon startled by a knock at her window. Outside is a young RAF pilot wearing a familiar coat. His name is Alec and his powerful presence disturbs and excites her as they begin an intense affair. Nothing though has prepared her for the truth about Alec's life, nor the impact it will have on her own.