Seven friends are on a summer road trip to the beach. Everything is going fine until their GPS stops working and their car breaks down in a spot with no service. They decide to walk and find their way to an old house, and surprisingly, there's somebody living in it. An old lady. She invites them inside. She seems normal at first, but eventually, the group begins to notice small details. And before they know it, they are trapped in the house with a murderous grandma. Now they must fight for their lives and escape the house before it's too late.