11-year-old Maggie Helsby is new at school and wishes she was better at fitting in. Having recently moved to the small countryside town of Goreway, with her parents, Maggie is looking forward to a fresh start.

Obsessed with scary stories and horror films, Maggie is intrigued by their new house, left to them by a great uncle she never knew, and sitting right on the edge of the famously creepy Skeleton Woods.

And within the Wood, Maggie uncovers Skeleton Manor, a run-down, derelict castle... that is really a vampire headquarters, concealed by vampiric enchantments. It houses the British vampire community, led by the notorious, evil leader Count Bloodthirst. But for some reason, those enchantments didn't work on Maggie.

At Skeleton Manor, Maggie meets a young vampire by the name of Sharptooth Shadow. Together with her bat with the oversized ears, Bat-Ears, Maggie and Sharptooth become unlikely friends. But when Maggie discovers that she is from an ancient line of vampire slayers, can the two remain friends?