It's fanfiction written by the webmistress of this site and what the site is sort of based around, although I think you only have to be a Harry Potter lover, and sort of sane to post here!
Anyway,
start here in Carpe Diem (I think...that's how I got into Imogen's fiction anyway) and then move on to Alpha and Omega. Once you read them, you'll understand the stories after then, and takes off of them on this site so much better!