Superman Unlimited. Vol. 1, Kryptonite KingdomSuperman Unlimited. Vol. 1, Kryptonite Kingdom

"When a city-sized asteroid hurtles toward Earth, Superman is sent in to save the day-but the reality of the crisis may be more than even he can handle! Superman has long since considered Earth to be his home after surviving the destruction of his birth planet, Krypton, as an infant. Now, thanks to a crisis of global proportions, the Man of Steel is confronted with a dangerous new status quo--Earth may no longer be safe for him, and yet he is still tasked with saving it."-- Provided by publisher.