When Devon, a mix of MacGyver and Sheldon, crash lands in Nazi-occupied France, his urgent mission becomes not one of escape, but one of rescue—to find his brother who may still be alive after bailing from an American bomber just moments before. On this hero's journey, he is sidetracked by a young woman, Claire, who trades her knowledge of France for Devon's help in recovering her father, arrested as a suspected member of the French Resistance. A relentless adversary pursues them at every turn. All the while, Devon carries with him the burden of a terrible secret that could destroy any hope he has of enlisting the help he needs in finding his brother—a secret that could also crush any chance he has at winning Claire's heart. An escape from the gates of the notorious Fresnes Prison, and a wander candlelit through the formidable maze of the French Catacombs, takes them into the very belly of the Nazi Luftwaffe beast. They must find a way to work together to stay one step ahead of capture, and return Devon's brother back to the safe shores of Britain.