"Travel back in time with young princesses Celestia and Luna to learn about what life was like in the Castle of the Two Sisters, before they lived in Canterlot. In this replica of the magical sisters' journal, read their firsthand accounts of building their castle in the Evergreen Forest with the help of one famous bearded sorcerer, and find out how they got their cutie marks by bravely protecting the ponies of Equestria together."--Page 4 of cover

Journal of the two sisters -- Journal of friendship