From the introduction: Atlantis is a mysterious continent steeped in cataclysmic history, and shrouded from North America by the treacherous Demon Seas. Those mortals who manage to travel to the continent, or wash up on its shores, are in for a ruthless awakening. Though timeless fables tell of a land of splendor and advanced human civilization, the monsters which now inhabit the dread continent are cruel in the extreme. Their Atlantis is a land of slavery, subjugation, and exploitation. It is a massive isle ruled by the Splugorth entity known as Splynncryth—a cosmic evil unparalleled in the depraved, the alien, and the bizarre. Already the unquestioned master and ruler of multiple worlds and servitor races, this chthonic being finds entertainment in the mayhem of Rifts Earth and sees her inhabitants as his playthings. There are few more malevolent forces that could take root in the world, and yet by attempting to seek out the most enjoyment and advantage for himself, Splynncryth is allowing the world to continue on largely without his involvement.