At the height of the Cold War, two secretaries are pulled out of the typing pool at the CIA and given the assignment of a lifetime. Their mission: to smuggle Doctor Zhivago out of the USSR, where no one dare publish it, and help Pasternak's magnum opus make its way into print around the world. Glamorous and sophisticated Sally Forrester is a seasoned spy who has honed her gift for deceit all over the world -- using her magnetism and charm to pry secrets out of powerful men. Irina is a complete novice, but under Sally's tutelage quickly learns how to blend in, make drops, and invisibly ferry classified documents. Their story is intertwined with that of the decades-long affair between Pasternak and his mistress and muse, Olga Ivinskaya, who was sent to the Gulag and inspired Zhivago's heroine, Lara.