Young couple Ed (Lee Williams) and Sarah (Pollyanna McIntosh) are set to begin a new life when they move from London into an isolated borders Scottish farmhouse. In bed on their first night Sarah thinks she can hear noises in the darkness but Ed is disbelieving. Persisting in her fear they are not alone in the house, she forces Ed to investigate. When he doesn't return, she investigates, only to be confronted by a welcoming committee of masked intruders. As she desperately searches for Ed, a terrifying game of cat and mouse ensues with the mysterious assailants. But what do they want and what horrors do they have planned for the two newcomers?