When Matthew Sullivan’s elderly uncle is ordered to clean his property or lose it, Matt begrudgingly helps the hoarder to organize his home. As he cleans, he discovers references to a grandmother the family has never discussed. His curiosity piqued, Matt asks his uncle what happened to her and receives stubborn silence. Confused and curious, Matt begins to dig into his family’s history. As he scrapes the surface, he receives a phone call from the campaign manager of an estranged uncle running for President of the United States. Matt is told to stop researching immediately. The call only galvanizes his need to discover what happened to his grandmother, Katherine Sullivan. Matt’s investigation leads him to a small town in West Virginia, deep in the Allegheny Mountains, where his questions cause the citizens of the town to turn against him. Still he persists to uncover the terrifying truth of what happened on that fateful day in 1948.