Barbara faces her personal demons by confronting the Joker, who is holding New York City to ransom. He plans to use a neutron bomb against it - everyone there will be killed, but no real estate will be permanently damaged. He tells her what's happened to him in the past few months: After his defeat and injuries at the end of 'No Man's Land', the Joker headed to Qurac, where he had a number of acquaintances, to whom he offered help in their current military and diplomatic problems. They appointed him as their ambassador to the United Nations, where he announced that unless the no-fly zones and sanctions around Qurac were dropped, he would kill everyone in New York. And get away with it, since as an ambassador he has diplomatic immunity. Power Girl and Black Canary decided to take actions in