Luhan is an ancient vampire, cosplaying... as Duke of West’s dead son. As he needed team/playthings, he summoned his brothers, Minseok and Sehun who were living just "fine" on their own. And one swindler wannabe who was a reincarnation of Minseok's bride.  Luhan’s goal is to find all of his brothers using Joonmyeon’s blood bending. Well... at least, that's what he said.