Throughout the decades, death has plagued the DC Universe and taken the lives of heroes and villains alike. But to what end? As the war between the different coloured Lantern Corps rages on, the prophecy of the blackest night descends and it is up to Hal Jordan and the Green Lantern Corps to lead DC's greatest champions in a battle to save the Universe from an army of undead Black Lanterns made up of fallen Green Lanterns and DC's deceased heroes and villains.