The episode begins when a French underground woman comes to the Stalag for safe keeping. But we will find out that woman has very little to do with the story as the main plot will be Klink illness. It seems that Klink has a mild form of the flu and will be send off to a rest camp to heal. Hogan's gang knows that if they send Klink off that they may never see him again so they have to come up with a cure to the sickness ASAP.
Between LeBeau's homemade cure and an allied drop of penicillin, Klink is rapidly better. But the is the problem of the woman that Hogan has to get out of camp.
There is nothing wrong with the story, it just felt like another replayed plot that was limited by the surroundings. There was some funny lines in the script and a nice play on the homemade cure but when the show ended it felt like an old story. But overall still a nice watch.