Having been trapped in the POW camp, Rene is enlisted in the plan to re-dig the tunnel, by getting rid of the dirt. Hans and the Colonel are playing cricket, though not very well, and Herr Flick and Von Smallhausen are digging their own tunnel into the camp. Monsieur Alphonse arrives at the Cafe to report to Fanny the news that Rene has been captured, but Rene and Company join in on the British prisoners' plan to escape - though only one person can escape in this way.
Meanwhile, Helga reports the situation to Gruber, and together they decide on a plan to rescue the Colonel, the Captain, and Rene, involving Gruber dressing as a nun.

Dressed as girls from the Foliandeacute;s Bergeres, the entire gang (the staff and the Germans) escape from the prisoner of war camp, and completely against plans bring the two British airmen with them.
Outside again, the Colonel finds that the Captain is missing, only his glasses are found.
Herr Flick and von Smallhousen intercept a message from London and try to send their own message, but Renandeacute; catches on and tosses the radio out the window, which leaves the randeacute;sistance without a means to contact London, until Michelle thinks of the radio in Lieutenant Gruberandacute;s little tank.

Since Mariaandacute;s disappearence, the cafandeacute; needs another waitress, but Renandeacute; and Edith has somewhat different ideas about who should fill the positition, but finally Michelle from the Randeacute;sistance brings tiny Mimi from another cell, to be Renandeacute;andacute;s bodyguard.
In the meantime, General von Klinkerhoffen gives the Colonel a new assistant, Italian liaison Bertorelli.

The Gestapo suspects that the Colonel and the General are in on a plot to assassinate Hitler, so Herr Flick goes undercover as Private Irma Von Kinkenrotten and plants a somewhat bizarre daffodil-shaped microphone in the Colonel's office, where Gruber and Von Strohm are making plans to get rid of Bertorelli in some way.
Meanwhile, as Edith prepares for her wedding, Rene and Co. must get the aerial for their new radio above the jamming signal of Herr Flick, so they disguise Mimi as a small nun to obtain a box kite which they fly to contact London and request plastic explosive to blow up the safe in the General's chateau to get the British Invasion plans.

There are still no batteries for the wireless radio underneath the bed of Renandeacute;'s mother in law, so Michelle's newest harebrained scheme is to have Renandeacute; and Yvette powering the radio with the generator from a bicycle until the stolen batteries from a German midget submarine are delivered.
The Lieutenant has finished copying the paintings (The Fallen Madonna... and the Van Gogh), and delivers them as sausages. Sausages also come from Captain Bertorelli (real ones), Monsieur LeClerc (submarine batteries), and Officer Crabtree (explosives), and soon they're all mixed up in the German officers pants.

The Germans arrest Renandeacute;, and the Colonel demands an explanation for the knockwursts with explosives in them. After a small lie, Renandeacute; is sent home with around a dozen knockwursts to hang in his kitchen.
The British have sent a spy camera with which the Randeacute;sistance should be able to photograph the plans for the German invasion of Great Britain, but the camera landed in the vineyard of Monsieur Alphonseandacute;s, and since the Germans commendeered the vineyard, the Randeacute;sistance cannot go and look for the camera.
This problem is solved when the General orders every peasant in Nouvion to work on the vineyard, which also leaves room for some sleepytime attempts on the Generalandacute;s life.