From the publishers website:
Hell on Earth explores a possible future to Deadlands where the heroes lost! The world has been turned into a post-apocalyptic wasteland and the Reckoners walk upon it in the flesh. Desperate Gunfighters prowl the irradiated High Plains alongside Doomsayers, Ravenites, and Toxic Shamans.
But all is not lost. Now that the Reckoners have taken mortal form, some whisper they might be destroyed permanently.