Steven Harris, his wife Julia and their six-month-old baby head to the remote island estate of Julia's parents, hoping for a peaceful getaway. But their plans go horribly wrong when they cross paths with the Savage Family, squatters raised on morbid traditions and strict values who've been calling the island their home for generations. On a dirt road leading to the island home, Steve and his family accidentally hit ten-year-old Jimmy Savage, mistaking him for a coyote. Soon Ma and Pa Savage are on a bloodthirsty mission for justice. As night falls, the Youngs come to realize they are trapped on the island, and their very survival will depend upon their ability to unleash the savagery within.