The film starts in October 1952 after Alan Turing (Ed Stoppard) has been convicted. He is talking to his psychiatrist, Dr. Franz Greenbaum (Henry Goodman). Dr. Greenbaum and Alan continue to discuss; Alan informs Dr. Greenbaum that he cannot talk about his war time activities. Dr. Greenbaum informs him that he can talk about anything he wants. Sir Dermot Turing, nephew of Alan, is shown and he goes on to explain how life was for John Turing (Alan's brother) and Alan Turing during their childhood. David Leavitt appears next and talks about Turing's school time activities. David further explains that Turing was good at mathematics and athletics. His favourite sport was running.