Storyline:After an unfortunate youth, brilliant mathematician Alan Turing (Benedict Cumberbatch) begins to realize his full potential while studying at Cambridge University. He is quickly one of the leading thinkers in the country, especially as far as his theories on calculating machines are concerned. Exactly these also draw attention to the genius of British intelligence. Alan becomes a member of a secret group at the beginning of the Second World War. Their task: to decode the communication of the Germans. With the help of Joan Clarke (Keira Knightley) and Hugh Alexander (Matthew Goode) and under the supervision of Stewart Menzies (Mark Strong) and Commander Denniston (Charles Dance) Alan tries to crack the encryption Enigma to get to war-critical information. ..