Hot enough for you? When Metropolis suffers a freak heat wave in the middle of winter, citizens blame Superman's powers. Superman decides to leave the city in order to save it...and leaves Lois to investigate the real heat source.
A heat wave in the winter causes the citizens of Metropolis to blame Superman's powers for their troubles after some scientists theorise that his drawing on the sun's powers is what caused it.
Superman promises at first to stop using his powers till things get cleaned up but when some people's lives are in danger, he breaks his promise and he gets arrested. He later promises to leave town as all things seem to lead that he is indeed the cause of the heat wave leaving Lois behind to discover the truth about what is going on.
Lois manages to discover that a factory of Lex Luthor is behind the heat wave since it is emitting a lot of heat and asks Superman to return to town to help them stop it.