Colonel Von Strohm and Lieutenant Gruber fail to escape to Spain. René suggests that they hide in a local windmill and pretend to have been kidnapped. General Von Klinkerhoffen has ordered the windmill to be used for target practice by the German artillery. René rescues the two German officers and is then captured by the Communist Résistance. Herr Flick has had plastic surgery as part of his plan to escape being captured by the Allies.

René is now a 'love slave' to the girls of the Communist Résistance. Meanwhile, it's assumed that he was killed when the windmill was blown up. Monsieur Alphonse has been comissioned to make a statue of him for the town square. René escapes from the Communist Résistance and heads for the café disguised as an elk. He's shot by the Germans, who are out on a hunting trip.

Michelle decides to smuggle René to England, since the Germans still think that he's dead. A parade through the town is being held in René's memory. René disguises himself as Officer Crabtree so that he can get to the town museum to hide until he can catch the plane to England. When the planned trip falls through, René decides to give himself up to the Germans. He pretends that he has amnesia caused by the explosion at the windmill.

Michelle tries to send important microfilm to England via a homing pigeon, but fails. Instead, new plans call for the group to sail to England with the film on a motorized float under the guise of the annual fishmonger's parade. Von Klinkerhoffen tells Gruber and Von Strohm of his plans to assassinate Hitler with an exploding picture frame. Flick and Von Smallhousen kidnap Mimi and Yvette, using their clothes and keys to enter the café to search for the painting.

General Von Klinkerhoffen takes Colonel Von Strohm and Lieutenant Gruber out to play golf. While they are playing, they discuss the plot to kill Hitler. Herr Flick eavesdrops on part of the conversation using a bugged golf club. Later, he intercepts the exploding picture frame at the station, thinking it's the painting of the 'Fallen Madonna'. René and company reach the coast, where they find that the Allies are landing.

Allied troops are now approaching Nouvion. The two British airmen, who've been shot down again, arrive back at the café. Next day, the Allies finally arrive in the village. Colonel Von Strohm and Lieutenant Gruber disguise themselves as Britsh airmen but are arrested. Herr Flick and Von Smallhausen try to escape in a midget submarine but are also captured. René is given a medal by the Allies. The scene shifts to the 'present'. Gruber, now a rich international art dealer, pays a visit to the café accompanied by Helga. The missing painting of the 'Fallen Madonna' finally comes to light when an arm is accidentally broken off the statue of René outside the café. While everyone is arguing over the painting, René makes yet another attempt to elope with Yvette.