Jimmy and Kara race back to Metropolis to stop Brainiac's invasion of Earth! Meanwhile, Lois tries to free Clark from Brainiac's control, only to lose herself in an alternate reality where Superman never left Krypton…

Superman, Kara, Lois and Jimmy team up to fight Brainiac, but will Superman have to choose between saving Earth and saving the people he loves? It's truth, justice and a better way clashing with the might of Krypton!