Dracula sends his hunchbacked henchmen, "The Hunch Bunch" (consisting of the unintelligent, incomprehensible Crunch and the sly, well-articulated Brunch), to America on a mission to turn Shaggy into a werewolf, and bring him back to his castle for the race. On the first night, the Hunch Bunch attempt to cut a hole in the roof above Shaggy's bedroom to let the moon shine on him. However, Scooby learns of their plan and rescues Shaggy just in time before his transformation could begin, but fails to convince Shaggy and Scrappy of the Hunch Bunch's presence. The second night, they go after Shaggy while he is shopping with Scooby at a supermarket, but they again miss their window due to their own incompetence. On the final night, while the trio is at a drive-in movie, along with Shaggy's girlfriend Googie, the Hunch Bunch manage to expose Shaggy to moonlight by dropping the sunroof of his customized race car with a push of its button, causing Shaggy to be transformed into a werewolf.