Princess Celestia sent Twilight Sparkle in a distant southern province of Equestria for exploring local cultural traditions, wanting her student to have a rest and improve communication skills with the other ponies. However, what she would not expect was for Twilight to be so involved certain aspects of ancient history in that area, that after returning, she immediately got lost in the archives of the Canterlot's library and found a book… a book which could change her life forever.

This is weird translation from russian made by my own. Original is here.