Nine-year-old Gappy's life turns upside down the day he faints in art class. A visit to the hospital is bad enough, but then comes the big shock. His parents tell him he is turning into a vampire! At school the next day, Gappy struggles to hide his dangerous secret. To his surprise, he soon finds himself using a vampire power he did not know he had. Is his secret still safe, or does trouble lie ahead for Gappy?