Nancy Drew and her friend Helen Corning have a dangerous boat accident on Moon Lake. They are saved by Laura Pendleton, a newly orphaned girl who will meet her new guardian soon. The guardian, Jacob Aborn, is purportedly an old friend of her late mother, however Nancy comes to believe that the man may have secrets and ulterior motives. She determines to save Laura from her guardian, and in the process comes across the man's bungalow in the woods. From there, the adventure truly unfolds.
