In 1940, as the shadows are lengthening over Europe, painter Louis Duval decides to leave his studio in Brittany &, in his small motor boat, make the short but perilous journey to Engl&. His aim is not to flee from the enemy, but to join the Resistance to fight for his beloved France. He arrives in Dartmouth & finds his way to the boarding house run by the delightful young widow Barbara Hillyard, who is trying to make a living for herself & her young evacuee Esme.
Lieutenant-Commander Alan Powell, unfit for active service after being wounded in action, is overseeing undercover operations in that part of the West Country, & he & Duval find themselves in dangerous circumstances. Alan, lonely & frustrated in his work, is drawn towards the lovely Mrs Hillyard, but she seems to have eyes only for the attractive Frenchman