The War of Light and the Blackest Night threatens the world of DCU. The seven coloured Latern Corps are in a desperate fight, and the Black Lantern Corps (mainly zombies) turn more and more violent.
Several deceased superheroes, for instance Aquaman and Martian Manhunter, reappear in Blackest Night: they turned into malignant zombies, obeying Nekron, someone who wish to extirpate everyone in the world. Flash and Green Lantern are ready to stand up against them…

Death in superhero comics is notoriously impermanent—characters ranging from world-beaters like Superman to minor bit-players are killed off only to be resurrected later—but never more so than in this miniseries, in which dozens of fallen heroes and villains, including Aquaman, the Martian Manhunter, and Elongated Man, are reanimated as evil, zombielike forces under the command of Nekron, the embodiment of death, who wants to kill all living entities. As always, it’s up to the stalwart superheroes—most notably the original Flash and Green Lantern, both recently returned from the grave themselves—to set things right. Like all such companywide crossover events, the story line was integrated into nearly all of DC’s many titles, but the major events occur in the nine issues collected here. Even so, the absence of the supplemental stories makes Johns’ thorny narrative even more abstruse, especially for casual readers. Reis’ art perfectly matches the script: ostentatiously flashy at the expense of coherence. But for die-hard fans, Blackest Night, which sets in motion monumental changes that will be felt throughout the DC Universe, is a must-read.