Having been trapped in the POW camp, René 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 café to report to Fanny the news that René has been captured, but René 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 René, involving Gruber dressing as a nun.

Dressed as girls from the Folies Bergère, 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 René catches on and tosses the radio out the window, which leaves the Resistance without a means to contact London, until Michelle thinks of the radio in Lieutenant Gruber's little tank.

Since Maria's disappearance, the café needs another waitress, but René and Edith has somewhat different ideas about who should fill the position, but finally Michelle from the Resistance brings tiny Mimi from another cell, to be René'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, René & 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.

The Germans arrest René, and the Colonel demands an explanation for the knockwursts with explosives in them. After a small lie, René is sent home with around a dozen knockwursts to hang in his kitchen.

Meanwhile, the British have sent a spy camera with which the Resistance should be able to photograph the plans for the German invasion of Great Britain, but the camera landed in the vineyard of Monsieur Alphonse's, and since the Germans commandeered the vineyard, the Resistance 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 assassination attempts on the General's life.

Armed with a camera disguised as a potato, René has to get into the chateau so he can photograph plans for the German invasion of Britain.

Leclerc and René plan to blow the safe in Lieutenant Gruber's bedroom. Edith's job is to drop a smoke canister down his chimney, but will she get the right one?

Having blown the safe in Lieutenant Gruber's bedroom, René and Leclerc are surprised by its contents. The Communist Resistance lies in wait for their escape, and holds them hostage in a sawmill.

Denise, the head of the Communist Resistance, who was René's sweetheart in his childhood in Nancy, and who's now determined to marry René.

Meanwhile, Edith and the servant girls have to explain to the Lieutenant why his little tank has crashed into the public toilet, and ends up getting Gruber's compassion.

René has a difficult time telling Edith that he will marry Denise, since Monsieur Alphonse has asked for Edith's hand, and Yvette has it in her heart to tell Edith that René will marry her instead.

René's friends rally round to try and save him from his impending marriage to the formidable leader of the Communist Resistance.

René and the Resistance need to find a huge amount of money quickly to save Mimi from the Communists.

When it is revealed that the one million francs stolen from the bank belong to Herr Flick of the Gestapo, the best place to hide them seems to be down René's trousers.

René has got rid of the Gestapo's money, next is the secret microfilm, but he is hampered by the Resistance girls in the cupboard.

While under interrogation, Alfonse's dicky ticker starts playing up, and he is whisked to hospital. He must be either rescued or eliminated before he can spill the beans about the stolen Gestapo money.

Michelle and Crabtree hatch another plot to get the British airmen back to Blighty. Captain Bertorelli has stolen Gestapo money planted on him.

Edith is in a romantic mood, and René is playing the piano.

Faced with the problem of hiding 1,000 kilos of stolen high explosive, Michelle of the Resistance decides on a simple but daring course of action. It will be hidden in 500 Christmas puddings.

Private Helga Geerhart plans to marry Herr Flick in order to report his every move to General Von Klinkerhoffe

When the British airmen are arrested paddling a tin bath down the estuary, René and his staff are instructed to rescue them from the chateau in coffins. All goes to plan, until Monsieur Alfonse challenges Monsieur Leclerc to a duel.

Michelle of the Resistance plans to infiltrate German headquarters to rescue the British airmen using hijacked German uniforms. But who will fit them? Officer Crabtree thinks René's chances are 'farty to one'.

Café René is the venue for a clandestine deal involving the solid gold cuckoo clock weight, Van Klomp's portrait of the Fallen Madonna and five anonymous characters wearing paper bags over their heads who answer to the names of Colonel X, Lieutenant X, Captain X, Private X and X.

Fanny and Leclerc's wedding is timed to coincide with the execution of Michelle's most audacious escape plan yet.

Michelle comes up with an audacious escape plan for the British airmen involving a barrage balloon and 24 cylinders of helium disguised as prize-winning marrows.