Knights of The Nine Completed

Why is that the title is Knights of the Nine Completed? you would probably ask, the title is related to oblivion and iv'e just finished the official plug-in "Knights of The Nine" which I started since yesterday and it is a quest to restore the crusaders artifacts and destroy Umaril which is a hard quest because there will be a lot of adventuring to do it took me 2 days (including sleep, eat, potty breaks etc.) to complete that quest maybe at almost14 hours or so.