Summer 1939. Translator Harry (Jonah Hauer-King) is working at the British Embassy in Warsaw, falling in love with Polish waitress Kasia (Zofia Wich?acz). When German tanks roll into Poland and Britain declares war on Germany, Harry and Kasia are faced with terrible choices.
What happens when a man who believes he has retired from MI6 is called back to do one more job to regain his life, only to discover that this job may mean he has no life to go back to.