As the battle to save humanity rages on three fronts, Wonder Woman, Supergirl and the JLA's Zauriel lead their team to Heaven to persuade Jim Corrigan to return to his role as human host for the Spectre. But when Corrigan refuses, the heroes head for Limbo in search of another hero to take up the mantle. Meanwhile, Superman and Zatanna lead a team into hell to reignite its fires.