The world is dying. Three times now Kaykayfilu, the Serpent Fish with a Hundred Feet, has arisen from the depths after growing huge on the energy of destruction, flooding the Land. Each time more reality has vanished forever, never to return. Each time the humans, lacking any kind of supervision, have caused the destruction that brought the flood. The fourth flood may very well be the last. It falls to the ngen, the Masters and Owners of Things and mighty preternatural beings from before the dawn of time, to infiltrate the dreaded cities of mankind. Not to strike the humans down, because that way lies corruption. Instead the ngen must convince the humans to turn aside from the path of destruction, one piece of the world at a time. Save the natural world from humanity (and humanity from itself) in Ngen Mapu, a new Fate World of Adventure of South American urban fantasy from Felipe Real and Evil Hat Productions!