Comedy veterans and co-creators Penn Jillette and Paul Provenza capitalize on their insider status and invite over 100 of their closest friends--who happen to be some of the biggest names in entertainment, from George Carlin, Whoopi Goldberg and Drew Carey to Gilbert Gottfried, Bob Saget, Paul Reiser and Sarah Silverman--to reminisce, analyze, deconstruct and deliver their own versions of the world's dirtiest joke, an old burlesque too extreme to be performed in public, called "The Aristocrats."

Ole and Chick are making a movie, but the director is not satisfied. So he brings them to a young writer, who outlines them an absurd story. They have to support Jeff and Kitty in setting up a musical revue in their garden and want to bring it up on Broadway. If Jeff is successful he can marry Kitty. But there is his rich friend Woody, who also loves Kitty, Chick's sister Betty, who's in love with a false Russian count, and detective Quimby. They all make the thing very complicated for Ole and Chick. After some mistakes they think that Kitty isn't the right girl for Jeff and they start sabotaging the show, but the Broadway producer is impressed and signs the contract. That's the story the writer tells them. For this he's sued by the director.

During 1st WW, two French officers are captured. Captain De Boeldieu is an aristocrat while Lieutenant Marechal was a mechanic in civilian life. They meet other prisoners from various backgrounds, as Rosenthal, son of wealthy Jewish bankers. They are separated from Rosenthal before managing to escape. A few months later, they meet again in a fortress commanded by the aristocrat Van Rauffenstein. De Boeldieu strikes up a friendship with him but Marechal and Rosenthal still want to escape...