There is something wrong with the trees. A presence screaming out in pain -- tearing, gnashing, and gnawing through the very fabric of the Green -- calling out for blood. In its wake, a trail of viscera and carnage is left -- leading to a mystery that the Parliament of Trees has conscripted Poison Ivy and Swamp Thing to solve. Can the Verdant Villainess and the Avatar of the Green make their way into the heart of this homicidal wilderness and discover the source of this horror, or will they find themselves the next victims of these feral trees? This story, brought to violent life by G. Willow Wilson and Mike Perkins, will answer these questions. But beware, this terrifying tale is not for the weak of heart.