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. A beautifully put together drama that sadly largely fails to deal with Turin the person and the tragedy that an ungrateful state bestowed upon him.