England, 1943 Lost in fog, pilot Vee is forced to make an emergency landing where she meets RAF airman Stefan, and then can't get him out of her mind. In occupied Poland, Ewa hosts German officers in her father's house, while secretly gathering intelligence for the Polish resistance. Mourning her lover, Stefan, Ewa is shocked to see him on the street one day. Haunted by a terrible choice he made in captivity, Stefan asks Vee and Ewa to help him expose one of the darkest secrets of the war.