Greg is ready to spend his summer with his best friend Bugster. He is looking forward to long nights of watching scary movies and eating too much chocolate. His plans get rippled when a strange man comes to his school claiming to be the new art teacher. His name is Mr. Dublock and he is a nightmare! Greg and Bugster want to see exactly who this new teacher is and get a real shock. Dublock is more than a scary art teacher. He is a scary vampire!