There is a beast in the fog. A hungry thing with claws and wings, that stalks unseen, that destroys everything and everyone it pulls in. But now it’s been stopped, at an old cabin in ancient woods, and four strangers, each desperate to remain alive, must figure out why. What is it about this building, this ground, that keeps the end of the world at bay? Assuming they can find an answer before killing each other and before the beast can find them, can they push the destruction back, or will they end up being the last four humans on Earth?