Colonel Klink's sudden bout with the flu jeopardizes Hogan's plan to smuggle an underground agent out of the camp in the trunk of the ailing Kommandant's automobile.

Hogan must deliver important information to a contact in the nearby town, but the Gestapo has cracked down tight on the camp.

Hogan dispatches Sergeant Kinchloe on a mission to warn Newkirk and Carter that the duo's mission to dynamite a newly-established Nazi rocket fuel installation could blow up in their faces.