1940: A cold upbringing with parents who unfairly blame her for a family tragedy has robbed Jess of all self-worth and confidence. Escaping to join the WAAF, she's stationed at RAF Holsmere, until a seemingly unimportant competition leads to her recruitment into the secret world of code-breaking at Bletchley Park. Love, however, eludes her: the men she chooses are totally unsuitable - until she meets Daniel. But there is so much which separates them...