Lois uncovers a secret in Metropolis and is determined to get to the truth. Meanwhile, Superman tracks down dangerous weapons in the city…and finds himself in the crosshairs of mysterious organization Task Force X.

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…