It was the final part of a four-part story of the Kryptonian Battle.
The world's military gives Superman just 48 hours to defeat Lord Nor, or they'll take on the "wacko Martian" themselves.
After surrendering, Clark is charged by Lord Nor for treason for not doing his destined duty, abandoning his people and committing adultery by marrying Lois (an Earth woman). He shows the Kryptonian council holograms and recordings as evidence. As a result, Clark is taken away to be disintegrated into matter and be scattered across the galaxy.
However Ching manages to save Clark's life when he discovers that his trial can be settled by challenging Lord Nor to a duel. He reveals this to the head of the council, Trey and they stop the procedure. Nor accepts the duel.
Superman and Nor meet in Metropolis in front of the Daily Planet in an empty alley. Lois finds out that the corrupt Colonel Cash of the United States military has stolen a sample of Kryptonite from Star Labs and plans to use it as gas to kill Lord Nor while using the Man of Steel as bait which would also kill him too.
Lois goes outside to warn Superman about the gas and he overpowers Nor and wins the duel.
Afterwards Nor's men suddenly appear to fight Superman. The gas is fired, killing Nor and his men, but Superman survives due to being unconscious and the other Kryptonians absorbing most of the gas. Colonel Cash is then jailed.
Clark decides to stay on Earth and the Kryptonians leave for New Krypton with Zara as their ruler and Ching as her husband.
Later Clark and Lois decide that they should marry for real and this time not let anything stand in their way.