Fan-favorite writer Geoff Johns reinvents one of Superman's greatest foes in this cataclysmic storyline. 
Decades ago, Krypton went to war with Brainiac, a cold and callous alien obsessed with the control of knowledge. Superman believes he's faced Brainiac before, but he's about to learn the truth behind his close encounters as he heads down the road to his greatest triumph...and greatest tragedy.