Jamie and Victoria are off for a last quick vacation before the arrival of their first baby. The remote country guesthouse Victoria chose seems like the perfect retreat; miles away from the distractions of work and their regular life. And the older couple that run the establishment, Barry and Fiona, are more than accommodating. But when Jamie and Victoria awake on their first morning, they find the house deserted. Barry and Fiona are nowhere to be seen. All the doors are locked. And their cell phones and car keys have disappeared. They have no way out and no way to call for help and the contractions are getting stronger.