The second world war is raging across the globe, and all Cas wanted to do was help. But when he meets Dean Winchester, the man afraid of planes who, for some reason, joined the Air Force, his world is turned upside down.
Dean and Sam Winchester are hunters. This time they come across a nest of vampires, and Dean is turned. Sam, with the help of the angel, Castiel, must find a way to save Dean before he is lost to them forever.