When a group of cave explorers unleashes a dangerous species of blind flying creatures named "vesps" from an underground mine, the population on Earth is attacked and killed by them. The government finds that the creatures attack through the human sound and requests people to stay quiet at home. However, the constructor, Hugh Andrews, decides to move to the countryside with his wife Kelly; their teenage daughter Ally, who lost her hearing a couple of years ago in a car accident; their son Jude; Kelly's mother Lynn, who has lung cancer; and their dog Otis in the family car. Their friend Glenn joins them in his own car. Glenn has a car accident and attracts the vesps. Later, Hugh and his family leave the car and walk, communicating only in sign language, seeking shelter in the countryside.—Claudio Carvalho, Rio de Janeiro, Brazil