"Today the City... Tomorrow the World!"
With the help of Supergirl, Superman tracks Nam-Ek to a spaceship in Earth's orbit, where, once on-board, Nam-Ek reveals that he is working with Amalak "the Kryptonian Killer". The situation quickly turns into a one-on-one battle as Superman finds himself trying to contain Nam-Ek, so he can use his horn to cure all the victims on earth, while Supergirl has the daunting task of trying to subdue Amalak.
Note: This story runs from issue #311 to #314.