Nick Gutlicht lives of illegally selling valuable books, owes money to a bunch of other crooks and has to hide from them. By chance he ends up in the mansion of the famous, now very old philosopher Curt Ledig, who despite the age related forgetfulness and pathological kitchen phobia resists to move to his daughter. Nick is hired by the family as watchdog. Now Curt can work on a presentation for the upcoming symposium, which anybody thinks he's capable of anymore. Nick thinks he has an excellent hiding place. This partnership of convenience of the two individuals quickly develops its own momentum. Curt regards Nick as an exciting research object and subjects him to an absurd therapy. For Nick it's a unique opportunity to fund his finances with Curt's phenomenal library. The strange couple is going through turmoil of incalculable proportions.
Based on the real life story of legendary cryptanalyst Alan Turing, the film portrays the nail-biting race against time by Turing and his brilliant team of code-breakers at Britain's top-secret Government Code and Cypher School at Bletchley Park, during the darkest days of World War II.