New York City has become almost uninhabitable when continuous sunlight causes unbearable heat, rationing of water and electricity, and swarms of people leaving, looking for cooler weather further north.
On a routine trip from London to New York in the 1970s, Trans-Ocean flight 33 experiences mysterious acceleration and weird atmospheric phenomena that transport the passengers and crew far beyond their destination.
Bus passengers stranded in a diner during a snowstorm become suspicious that someone there is really a Martian from an unidentified flying object that has been reported in the area.
