1956. A celebrated Russian author is writing a book, Doctor Zhivago, which could spark dissent in the Soviet Union. The Soviets, afraid of its subversive power, ban it. But in the rest of the world it's fast becoming a sensation. In Washington DC, the CIA is planning to use the book to tip the Cold War in its favour. Two typists are charged with the mission of a lifetime: to smuggle Doctor Zhivago back into Russia by any means necessary. Two female spies. A banned masterpiece. A book that changed history.