Joe Wilderness is a World War II orphan, which he thinks excuses him from common morality. Cat burglar, card sharp, and Cockney wide boy, the last thing he wants is to get drafted. But in 1946 he finds himself in the RAF, facing a stretch in military prison, when along comes Lt. Colonel Burne-Jones to tell him MI6 has better use for his talents. Posted to occupied Berlin, Wilderness finds himself with time on his hands and the devil making work.