When Anna Franklin embarks on a graduate degree in cryptography at Oxford, she anticipates decoding puzzles. Only her studies are a bore, her family is all but nonexistent, and she can't find a good slice of pizza to save her life. After her beloved advisor has a stroke and she's assigned to work with cocky post-doc Hendrik Van Der Aart, she wonders if her purpose might be to crack the code on the meaning of her life, not the latest math riddle.