When Prof. William Dyer, a geologist from Miskatonic University, investigates an abandoned city forged with weird non-human geometry in the ice-wastes of Antarctica, he uncovers evidence of an ancient and cataclysmic war waged between races of malignant aliens: long before the advent of the human race, the Elder Ones battled for supremacy with the Star-spawn of Cthulhu, leaving behind a lurking protoplasm of unimaginable cosmic evil.