When Jo Yang Sun is driven out of house and home after her father is framed for a crime, she is forced to crossdress in order to make ends meet as a bookseller, where she meets Kim Sung Yeol, a handsome, but mysterious scholar who is actually a vampire. Meanwhile, an evil presence at the royal palace stops at nothing to keep the Crown Prince from claiming his rightful throne.
as Kim Sung-yeol
as Jo Yang-sun
as Lee Yeon
as Gwi
as Choi Hye-ryung / Lee Myung-hee
as Soo-hyang
as King Seonjo
as Ho-jin
as Dam-yi
as Rho Chang-sun
as Dam Yi
as Hak-yeong
as Sook Bin
