British action drama starring Saoirse Ronan. Understandably cold and aggressive after being shipped off to Britain from America to stay with her distant relatives, Daisy (Ronan) is initially weary of her new home in the English countryside, but as a relationship develops between Daisy and her cousin Edmond (George MacKay), she starts warming to her new surroundings. Left to their own devices while her Aunt Penn (Anna Chancellor) is abroad involved in peace negotiations, the group enjoy their idyllic surroundings and isolation from parental influence. However, when World War Three breaks out over Europe and Britain is taken over by military forces, the group is split up and detained in prisoner-of-war camps. With nothing left to lose, Daisy begins planning her escape in the hope of reuniting with her lover, but with war taking its toll on everyone throughout the country, she grows fearful of what she may find...