Trapped between the warring tribes led by The Joker and Lex Luthor, Catwoman is forced to make a deadly decision that will change several lives forever. The hostilities on Hell Planet are about to reach a boiling point, and nobody is a sure bet to make it out alive. And that's before things get worse with the unexpected arrival of a new group looking to exterminate every villain in sight.
Joker and his band of misfits tries a sneak raid on Luther for supplies. After a long battle it is revealed that Blockbuster is actually Martian Manhunter. Both sides team up and take him out...meanwhile it is finally shown that 'Master Desaad' is behind the planets origin. It is a testing ground for his Parademons, which now will be tested against Earth's worst criminals.