Evacuated to the countryside, she realises there are more dangers than German bombs in wartime? Canadian-born teacher Victoria McKaye takes up a new position at a London school, but soon finds herself coordinating its evacuation to a Norfolk village along with standoffish spinster Beatrice and quiet young Nell. Victoria has to adapt to life in the countryside, petty politics and local busybodies. When she meets attractive naval officer Louis Grainger, romance blossoms. Victoria is drawn into a clandestine world and told that she is helping the British government, but after she catches Louis covertly meeting a suspicious stranger in nearby woods, she fears the worst - a traitor in their midst. It's a race against time for Victoria to discover the truth and keep the village - and the country - safe from invasion.