In Vampire Academy: Blood Sisters Rose Hathaway develops a mental and spiritual bond with her BVFF (best vampire friend forever) Princess Lissa. The two girls attend a strict school for vampires designed to retain their humanity where it is Roseas task to protect the Princess. Among the everyday issues faced by teenage vampires Rose falls for Dimitri, their dreamy guardian, and together the three battle the mysterious forces of the evil Moroi who are set on destroying the Princess's bloodline.