After the death of Dan's grandmother, he and his wife Julia inherit the family home in upstate New York. Things take a turn from bad to worse on their drive to the house when they strike a dark, mysterious creature that appears seemingly out of nowhere in the center of the road.
Dan goes out to take a look and informs Julia that they have hit a dog. However, after taking it with them to give it a proper burial, Julia begins to feel like there is something Dan isn't telling her. Was it really just a dog they buried in the backyard? As tensions rise, danger seems to be looming around every corner. Julia wonders if her mind is playing tricks on her, or perhaps there really is something unnatural going on in the secluded woods of the Adirondack Mountains.