Rosemary Sample is an airplane flight attendant on a flight to Salt Lake City. As she prepares for the flight, Rosemary meets a mysterious dark lady clutching a bag that she refuses to check. The flight encounters a snowstorm during the flight and is forced to land before reaching its destination. The passengers all spend the night in a local hunting lodge. When they awake, the dark lady finds that her bag is missing. Her bad contains important documents that may mean the life or death of thousands of people in the small town of Happy Vale.