Set against the backdrop of a picturesque Ohio farmhouse, "The Farmhouse" follows teenager Zachary Taylor during a summer visit to his grandparents. Excited yet uneasy, Zach discovers an old key and a mysterious map marking an 'X' behind the barn. Intrigued, he sneaks out at night to excavate the site, unearthing a hidden box filled with old photographs, letters, and a sparkling bracelet belonging to a girl named Eliza. When a sudden gust of wind reveals Eliza's ghostly figure, she implores Zach to return the bracelet to the old well, promising to set her spirit free.