Plot summary
Two years ago, three Nazi officers woke up from a long sleep and, after finding out that they lost the war, they want to create a new Nazi country in the US and then, dominate the whole world. To do that, they have to first eliminate Superman so he will not be able to stop them. In the present day, Lois and Clark try to organize their wedding but their plans are put on hold to investigate this Nazi organisation known as "N.S.B.A: National Society for a Better America".
Superman is sent to a trap where a nuclear bomb explodes making it impossible for anyone to get near him without dying. He locks himself in a special shield room but with Lois' help, they find a way to remove the nuclear energy from his body and stop the Nazis before it is too late. Superman eventually stopped the Nazis and their inside guy Skip ( Sean Whalen ) who worked at the Daily Planet to take down Superman.
Credits
Adapted from Wikipedia contributors, Lois & Clark: The New Adventures of Superman season 3. HTML formatting and reference markers removed.