1917. Driving an ambulance through the mud in Flanders, aristocrat Evie Creswell is a long way from home. At Oaklands Manor she was expected to look pretty and make a good marriage. But with the arrival of World War One everything changed. Evie shunned an aristocratic husband and instead wed artist Will Davies, who works as a butcher’s apprentice. As she struggles to transport the wounded to hospital, avoiding the shells and gas attacks - her privileged home life, and her family’s disappointment at her marriage, are a lifetime away. While Evie drives an ambulance in Belgium, Will is in the trenches in France. Can their marriage survive this terrible war?