My Babysitter's a Vampire (2011)

Sarah is adjusting to being a full-blooded vampire and learning to play by the rules of Whitechapel’s Vampire Council, while Ethan refuses to give up on his dreams of curing vampirism and finally asking Sarah on a date. Ethan and his friends soon discover they have a mysterious new enemy determined to wipe out all the supernatural competition in Whitechapel.