Sunata is the heir to a family of Vampire Control Specialists, but all he wants is a normal life. One fateful Halloween day, he ends up meeting Yukari, a strange vampire girl. Yukari must find somebody to scare or she'll never be able to return home. And if she doesn't return home, she'll never stop bothering Sunata! Begrudgingly, he agrees to help her out on this silly mission, a mission which he soon finds out might be impossible. Has there ever been a worse vampire?!