As far as plot is concerned, Georgiana's red mark is pretty much the focus of the story; this is the tale of Aylmer's attempts to remove his wife's birthmark. Of course, symbolically, the birthmark holds enormous weight for the story's themes and ultimate moral, whatever that may be (see "What's Up with the Ending?"). We discuss the symbolic birthmark in all its symbolic glory in the "Symbols, Imagery, Allegory" section. Be sure to head on over there and check it out.