Following the universe-shattering events of Dark Nights: Metal, the Earth is enveloped by the Dark Multiverse and has transformed into a hellish landscape twisted beyond recognition. Willing to sacrifice his own humanity for the greater good, Batman wields an evil Black Lantern power ring, which grants him the power to resurrect the dead. Now, leading an army of zombies and riding a Batcycle made of bones, the Dark Knight wages war against The Batman Who Laughs and his omnipotent goddess, Perpetua, in his mission to save the DC Multiverse!