Haunted by the vision of a spectral General Zod™ seeking salvation, Superman™ embarks on a perilous journey into the Phantom Zone, where Kal-El discovers an army of deadly Brainiac™ drones! Superman soon learns that Val-Zod™, the Superman of Earth-2, has also been lured to the Zone by ghosts from the past. Although powerless in the Phantom Zone, the Men of Steel™, donning protective Kryptonian armor suits, vow to vanquish Brainiac and the menacing mechanical army.