College professor, Dr. Martin York arrives in rural Rock Valley Tennessee after learning his uncle mysteriously fell ninety feet to his death behind the house that overlooked the broad, verdant valley. Martin arrives at the family home after the funeral to be spellbound by its many secrets that it gives up but at a price. He learns of relatives he didn't know existed in his search to discover why his uncle fell from the rocky precipice. During one of his searches of the old house, he discovers a manuscript by a long dead unknown relative that sheds light on the distant feud between the Yorks and the Campbells. The feud seems related to the unseen foe that repeatedly threatens his life.
