In the TV show "GOING BATTY," the class is studying nocturnal animals and Ms. Frizzle takes the parents on a nighttime field trip to learn more about bats. As the night progresses, Ralphie becomes convinced that The Friz is a vampire! The class follows Ms. Frizzle and their parents to a scary old castle where, by becoming bats themselves, the kids find out the wonderful truth about these creatures of the night, and Ms. Frizzle!