Don and Pat Carter are on their honeymoon when their car breaks down in the small town of Ridgeview, Ohio. They have a few hours to spare while their car is being repaired and spend time in the diner. There they find a fortune-telling machine, a game where you can ask a question and for a penny will spit out an innocuous answer. When the machine apparently begins to predict events - Don's promotion at work, a near accident on the street outside - a superstitious Don becomes infatuated with the device threatening his marriage and his future with Pat.