A pretty and very well-dressed young lady that they don't pay attention to what they are doing and simply walks through town. However, the men, being men, are so captivated by her beauty that they stop paying attention to what they are doing--resulting in a long string of disasters until the local police come to the rescue.
When someone today watches films from the late 19th and the beginning of the 20th century, they may not realize just how far films have come--and assume the old film is terrible. But what is important to know is the context. Films as we know them today just didn't exist--and I am not just talking about the sound or color. The plots, scripts, characterizations, etc. were all pretty much unimportant in these earliest films. In many cases, the director just yelled out suggestions for improvisations and that was THE script through the 1910s. However, "Une Dame Vraiment Bien", compared to the average film of the day, it was darn funny and well-constructed--with good timing and sight gags galore. Given the context, it was a successful film and is mildly watchable today--if you are a fan of these very early films. I liked its gentle sense of humor and timing. Otherwise, you may not get much out of this one.