February 1942: Twenty-three-year-old Francesca Fabrino, like thousands of other women, is doing her bit for the war effort in a factory in East London. But her thoughts are constantly occupied by her unrequited love for Charlie Brogan, who has recently married a woman of questionable reputation, before being shipped out to North Africa. When Francesca starts a new job as an Italian translator, she meets handsome Count Leonardo D'Angelo. Just as she has begun to put her hopeless love for Charlie to one side, he returns from the front, his marriage in ruins and his heart burning for Francesca at last. Could she, a good Catholic girl, countenance an illicit affair with the man she has always longed for? Or should she choose a different, less dangerous path?