PLOT:
After stepping into a mysterious machine in the depths of Salvations Run's hell planet, Selina finds herself with a gun held to her head. The man holding the gun says that it's time for her to pay for the murder of Black Mask. The man holding the gun? Batman.

But is it Bruce? After taking down the Bat, Selina unmasks her assailant to find an overweight and older Bruce. Selina is beginning to believe that perhaps she didn't go back to her Earth after all when she comes face to face with that world's Catwoman who shoots her point blank in the gut. It turns out that on this Earth, Selina is not only more powerful but also apparently bullet proof. After besting her doppelganger, Selina unmasks the other Catwoman (who is a mass murdering master criminal on this planet) to find her sister Maggie. Maggie confesses to murdering Black Mask in order to avenge the death of her sister Selina. Before she can fully assess the situation, Selina is contacted by Martian Manhunter who tells her that nothing is exactly as it seems. Before he can elaborate they are interrupted by police gunfire.

Meanwhile, Lex Luthor stands idly by watching Selina hover in suspended animation. The entire world Selina is living in is nothing more than a hallucination brought on by the hell planet's machine. Her vitals are slowing and she is going to die if Luthor can't find a way to get her out of the trance. But if she's dying - then why is she still smiling? Does Catwoman want to leave Salvation Run after all?

NOTE:
Selina briefly makes mention to the fact that Bruce had once told her about the existence of multiple worlds. She specifically cites the world (Earth-2) where she and Bruce marry and produce a child (Huntress).