Twilight Sparkle, archmage, local Princess and part time friendship tutor, finds a book about a long lost school of magic on her doorstep.
It just so happens that the actual act of necromancy is more difficult than your average spell. Follow Twilight as she attempts to find virgins to sacrifice, carve pentagrams into her floor and generally do evil necromancy things.
All in the pursuit of knowledge, of course.