When carefree teenager Jay sleeps with her older boyfriend for the first time, she learns that she is the latest recipient of a fatal curse that is passed from victim to victim via sexual intercourse. Death, Jay learns, will creep inexorably toward her as either a friend or a stranger. Jay's friends don't believe her seemingly paranoid ravings, until they too begin to see the phantom assassins and band together to help her defend herself.

Massive earthquakes open the Arabian tectonic plate, resulting in unstable weather and freezing temperatures that will be unsurvivable by nightfall. Attempting to reach safety, a vacationing family in Egypt must battle the rapidly cooling temperatures that usher in a new Ice Age, covering the Sphinx, Pyramids, and Sahara Desert with mountains of snow.