In spring 1941, as London is being destroyed by the Blitz, Gwen Davis, a young horticulturalist, leaves her beloved city for the Devon countryside, where she will instruct a group of girls in growing crops for the home front. There, on a beautiful but neglected country estate, she meets two people who will change her life forever: Raley, a Canadian officer awaiting posting to the front with his men; and Jane, a frail but free spirit whose fiancé is missing in action. As the distant war moves ever closer, Gwen, through these two war-weary companions, comes to understand the unbelievable joy and the unbearable risks of love.