During the Civil War, Confederate soldiers escape from a Union prison and head for the Mexican border. Along the way, they kill a Union courier bearing the news that the war is over. Keeping the message a secret, the captain has his men go on and they soon find themselves in a battle with the Union search party who also is unaware of the war's end.
Three escaped criminals from the planet Krypton test the Man of Steel's mettle. Led by General Zod, the Kryptonians take control of the White House and partner with Lex Luthor to destroy Superman and rule the world. But Superman, who attempts to make himself human in order to get closer to Lois, realizes he has a responsibility to save the planet.