I think the synopsis says it all: it is a reformatting of an old short story, accompanied by contemporary pictures and music. This is supposedly meant to enhance the ambiance of the short story. You can go back and forth in the story, which is shown a couple of paragraphs at a time.
Though I do like adaptation of older work into an Interactive format… It didn’t really work for me, especially when portrait-oriented pictures were included (forcing you to scroll up/down the page). I found the contemporary pictures kind of going against the story, not finding the link between the specific picture and the text shown on the screen. I think it might have worked better if the adaptation also included more interactive text…