The story of a family struggling to survive in a world terrorized by a deadly, primeval species who have evolved for millions of years in the pitch darkness of a vast underground cave system, hunting only with their acute hearing. As the family seeks refuge in a remote haven where they can wait out the invasion, they start to wonder what kind of world will remain when they're ready to emerge.
Did You Know?
Around the fourteen minute mark, the Andrews family are watching a news broadcast that lists affected states. The newscaster mentions West Virginia during a cutaway shot of John Corbett, who was born in Wheeling, West Virginia. See more
When Ally is chatting to Rob on her iPad and loses internet connection, the error message states that the internet browser (named Safari) cannot connect to a URL. This is the incorrect URL for the Safari browser website, and instead links to an African Safari tourism company. See more