Newlyweds Sarah and Cory Morgan plan a peaceful getaway with Cory’s 7-year-old son, Liam, hoping to ease the transition with his new stepmother. Although the setting is Cory’s secluded and opulent countryside home, the family soon discovers their choice was ill-advised. It becomes apparent that intruders have been occupying the house while they were away. These uninvited guests soon make their presence known, thrusting the family into a battle for survival. What was intended to be a serene vacation rapidly devolves into a terrifying ordeal, turning their dream holiday into a nightmare.