SUPERMAN AND SWAMP THING UNCOVER THE SECRETS OF THE GREAT DARKNESS! During the original Crisis on Infinite Earths, Swamp Thing encountered and formed a truce with the Great Darkness, but this ancient force has been awakened by Pariah and now its influence is felt across the Multiverse. Now the Avatar of the Green must work together with new allies to investigate how far it's spread and why it would work with Pariah. If they want to stop the Great Darkness from swallowing the Green, they need some extra help... ENTER: SUPER SWAMP THING.