It's hot in Metropolis, too hot...given it's November. A scientist believes Superman may be the cause of the heat, that his powers being from the sun are creating a solar conductor on the city. When it actually Lex Luthor is manipulating the city temperature with a nuclear conductor as yet another way to try to rid the world of Superman. After nothing seems to keep him from using his powers Superman decides to leave Metropolis, which means Clark has to leave which makes Lois realize how much he truly meant to her, even if she doesn't want to admit it...even to herself.