I don't think you understand how summaries work. The point of them is to give the reader a rough idea what the story is about, usually going from the premise set in the first few chapters the author posts. For the work you are talking about, I see three posts with story, that is more than enough for a summary. Furthermore the status is given as "In Progress", and the link to ff.net is in the OP. If the summary makes a reader interested in the story they will easily be able to get to ff.net and continue reading there. There is literally no problem here.