The villains of Joker Incorporated continue to wreak havoc across the globe.

Can Batman Incorporated stop them without betraying a promise to Batman? Joker continues to force their hand into a bloody, winnerless battle. With one member of Batman Incorporated dead and another on life support, the team is faced with a terrifying realization that Joker Incorporated may have outplayed them. Knight and Gray Wolf discover a startling secret about the Welsh madman Dai Laffyn that may help them turn the tide in this war--but at what cost?