Geoff Johns and George Perez continue crafting the Crisis of the 31st Century! As Superboy-Prime leads the Legion of Super-Villains against everything and everyone inspired by the legacy of Superman, the Legion of Super-Heroes are forced to call for help from beyond their world. Meanwhile, contingency plans are created by Brainiac 5 as he attempts to overcome Colu's devastating betrayal, Dawnstar and Wildfire pull off a startling rescue, but at a horrible cost to the universe, and Saturn Girl uncovers the source of the Legion's troubles.