When nursery teacher Jenny escapes to the country for a relaxing weekend away with her boyfriend, she is unaware of a romantic surprise he has in store. The location is perfect. A lake enclosed by woodlands, seemingly deserted. The scene is set for a picturesque proposal. But before the happy couple can enjoy the retreat, their peace is shattered by a gang of violent youths. What follows is a shocking and unrelenting game of cat-and-mouse, as Jenny is forced to fight back against her attackers.