Two young couples incur the wrath of a massive grizzly bear after their car breaks down in the middle of nowhere. It was supposed to be a quick shortcut through the forest, but when the off-road driving takes its toll on the car, the frustrated passengers realize they're stuck for the night. After night falls, a massive grizzly bear emerges from the surrounding forest, and is hastily shot. But this bear wasn't alone; she had a mate, and now he's hungry for revenge. As the bear prepares to attack, the frightened travelers lock themselves in the car. Before long, the grizzly is taking apart the car piece-by-piece. It's only a matter of time before he gets in, and when he does, it's all over. Later, as long buried secrets begin to resurface, everyone realizes that people can be just as vicious and brutal as nature's most fierce predators.