The Mystery Gang visits Oakhaven, Massachusetts for the Autumn Harvest Festival, where they meet horror writer Ben Ravencroft, who shares the dark history of his ancestor, an evil witch named Sarah Ravencroft. As they delve into the town's mysteries, they discover eerie occurrences linked to the locals, which escalate into something sinister.

Scooby-Doo and the Witch's Ghost
A group of friends in Oakhaven, Massachusetts, unearths the sinister secrets of a renowned horror writer's family, which are linked to a notorious witch from his troubled past.