When Ben and Sara Ward travel from their home in San Francisco to the edge of Redwood National Park to stay with their aunt for the summer, they have no idea the trouble they might encounter. On the first day at their aunt's house, Ben and Sara learn of the Hobgoblin of the Redwoods, and are warned not to enter the Redwoods on their own. Do they listen? What do you think? Will they escape the Hobgoblin? Find out if Ben and Sara make it out of the Redwoods, or if the Hobgoblin catches them first.