You are Jack Sterling, secret agent (or spy to those who are less polite about such things) in the service of the British government. Your superiors are a little more than merely bosses at MI5 or 6, however; you don't really work for anything as organised as a specific branch. Freewheeling is more your style.
In your time you've saved the world from more than your fair share of James Bond-worthy plots, but still you're always hungry for more.
Your next mission could be your last, however.
You've faced down psychopaths, explosives, car chases, brainwashings, guns, murderers, femme fatales and sharks with frikkin' laser beams on their heads, but they will be nothing compared to your new experience.
You are going to be shrunk.
Seeing as how the espionage world is a very strange place already, there are several ways in which this might transpire...