Childhood sweethearts Jess and Ella are running scared in rural Yorkshire as the Hunters prowl the country lanes in hot pursuit, while businesswoman Toni moves further north - unaware her every move is being tracked. Best friends Ben and Rob try to get one step ahead by communicating with friends via Xbox but one crucial error may cost them dear. Having been let down by their friend, Frankie and Dan reach out to their network for help. However, they quickly realise they are trapped in their `safe house".