Its a story where "She" is the antagonist, and you "the listener" are the protagonist. By listening you can "assume" the role of the protagonist much in the same way as an RPG or imagine the story like reading a book, and feel the emotions of the protagonist in the music. I can't tell you too much about the story, but basically its about the loss of love, betrayal, obsession and subsequently death. She never gets mentioned where she comes from or what she is but like I said, its part of a bigger picture.