Unhinged

Three college students Terry, Nancy and Gloria, leave for a music festival in fictional town of Fictional city. A thunderstorm begins to appear, when Nancy, speeding down the road, accidentally crashes the car. Terry awakes to find her and her friends alive, sheltered in a large mansion in the middle of nowhere, owned by the Penroses: Marion and her mother, and their groundskeeper, Norman. Gloria is the only one with serious injuries, so Marion suggests that they spend the night until Gloria is able to leave with them. Terry and Nancy are invited to dinner, with Marion and her embittered and elderly crippled mother. Throughout dinner, Marion's mother rants and raves about her disgust toward men, and how her husband left her for another woman. Later, in a music room, a mysterious man looks menacingly into the windows at the women.