After the Colonel makes René promise not to hang out with the Resistance anymore, Herr Flick's sausage (containing the forgery of the Fallen Madonna) is kidnapped by the Communist Resistance. The Colonel and the Captain are anxious that it doesn't come out that they have switched the paintings, and order René to come up with the ransom, which Edith gets from Monsieur Alphonse. The ransom is to be left by René and his staff, dressed as German soldiers. But the whole thing is watched by German soldiers dressed as French policemen, the Gestapo dressed as French Resistance girls, and the Colonel and the Captain dressed as trees. And of course, Lieutenant Gruber stumbles upon the meeting, and his dog can't help but chase the sausage.

René tries to go back to his normal life after his fake execution, posing as his twin brother, also named René, but the funeral arrangements are difficult when there is no body, Monsieur Leclerc is cheaper than the regular priest and the coffin is filled with anti-tank bombs.

The Colonel & the Captain mull over their situation and decide they should probably hand over René and the painting to the Gestapo in order to get rid of Herr Flick. But René convinces them that they could hand over a forged copy of the painting instead (with the assistance of a conveniently-located forger), and gets them to lend their uniforms to the escaping British officers so the Brits can take the painting to England to be forged. Meanwhile, everyone keeps handing René poison pills "to make it easier", Herr Flick decides his relationship with Helga should include an intimate dinner in Rene's back room, and Hans figures out that putting cheese in one's ears improves the sound of Madame Edith's singing.

René disguises himself as his father in order to escape the wrath of Denise Laroque.

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.

Not only does René nearly get blown up by an exploding Christmas pudding, he also gets roped into another Resistance plan to smuggle out the British airmen.

Newly-weds Fanny and Leclerc are sent to jail by the Germans for flying around in a bed attached to a balloon. Edith decides they have to be rescued - much to René's horror. But her plans are thwarted by a loose bed knob.

The Colonel, Gruber and Bertorelli desperately try to stop General Von Flockenstoffen's suicidal plan to kidnap Churchill.

René has organised a secret wedding with Yvette.

Michelle's new plan involves an eel, a dogfish, ten million francs and the Fallen Madonna.

Herr Flick and Von Smallhausen plan to impersonate Yvette and Mimi to search the cafe.

The Colonel's birthday party becomes a perfect opportunity for getting the real painting of the Fallen Madonna with the Big Boobies back from Herr Flick of the Gestapo, and substituting it with the forgery that was made earlier. The plan is to not invite Herr Flick but make sure that he hears about the big Binge – a traditional feast with genuine Bavarian dances featuring girls dressed as the Hitler Youth – so that he will have to come. In the meantime, René and Edith are supposed to walk into the office of Herr Flick and substitute the real with the fake. Of course, they fail – which means that Herr Flick now both has the fake and the original plus a second forgery, which he commissioned on his own in order to have money for his marriage with Helga after the war.

After the British airmen are gone for good – or so René thinks – there is still the problem of Herr Flick owning all three copies of the Fallen Madonna with the Big Boobies (one original and two fakes), and while Herr Flick kidnaps Lieutenant Gruber (a former art house worker), the Colonel and the Captain start to plan their next move. All the while, René's widow Edith have found René's will, and being the sole beneficiary, goes on a spending spree with René's money to attract better suitors. And the British airmen return as nuns. They are last seen hidden in the piano.

René is caught in a dilemma when he must choose between the women he loves: his waitresses Yvette and Marie, and his wife Edith, who as his widow has all his money. Unfortunately, he cannot bring himself to woo Edith again, so Edith seeks the attention that she can get from other suitors in town.

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.

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 Colonel & the Captain and Herr Flick are all disguised as onion sellers while the German uniforms are being remade by the Jewish tailors of London. Michelle delivers a bottle of nitro-glycerin disguised as a bottle of Bols Gin to hide in the Cafe until they come to fetch it that night to blow up a German railway.

The Communist Resistance wants to make a martyr out of the dead René, and kidnaps the Colonel and the Captain at the Captain's birthday party. To make matters worse, they offer them on a platter to René's twin brother René, so that he can shoot them.

After failing to destroying the train, which will take the copy of the painting of the Fallen Madonna with the Big Boobies to Hitler, René and the Captain are captured by the Resistance, only to be rescued by Herr Flick. The Colonel and the Captain are afraid that Hitler will understand that the painting is a copy, and prepare to escape to Switzerland. In the meantime, British agent in disguise, officer Crabtree, has a new escape plan for the British airmen.

René tries to hide from the seconds of Monsieur Alphonse, the undertaker, but in his stead Lieutenant Gruber accepts the duel. However, the Colonel and the Captain want to save René and plans an exercise to "accidentally" kill Monsieur Alphonse. The plan is thwarted by Herr Flick, who has discovered that the sausage that was sent to Berlin containing the painting of the Fallen Madonna with the Big Boobies did not contain any painting – either real or fake. Herr Flick correctly assumes that the Colonel and the Captain stole the painting, and arrests them and cancels the exercise. Now René has to fight the duel on his own, while Yvette and Maria grieve on the sidelines and his wife Edith catches up on the gossip of the week.

While the Captain is sitting in the café, herr Flick from the Gestapo is listening when René is talking to London on the wireless. He soon cracks the code surrounding the message with the plan to dig a tunnel from the mortuary to hide the British airmen. But it's soon apparent that the two airmen and Monsieur Alphonse need help with the digging, and the café staff are called in, leaving Madame Fanny and Leclerc in the café. But the Colonel and the Captain follow René, discover the tunnel, and are captured in the prisoner of war camp.

After the Colonel's and the Captain's uniforms are borrowed by the British airmen, and later burned, they will have to send for replacement uniforms. Supplied by Michelle are carrier pigeons, which madame Edith accidentally cooks and serves to Herr Otto Flick.

Hans mistakes the nitro for gin and accidentally blows up the railway himself! The Germans capture René, Yvette, and the peasant-disguised Colonel and Captain. As Helga, Leclerc, and Edith each attempt to help the gang escape, General Von Klinkerhoffen arrives in town and demands that the only known saboteur be shot. This means René's death by firing squad, with Lieutenant Gruber in charge of the squad!