"Trading Places!" Guest-starring Captain Marvel. The Cyborg-Superman is back and the Man of Steel intends to end his evil ways here and now. Plus, when the World's Mightiest Mortal spots his arch foe Black Adam he pounces. But, what these two heroes don't realize is that they're really fighting each other. Can someone please find out what is going on before the Earth's two strongest champions kill each other? Meanwhile, Lois continues her search for Clark.