A powerful Parasite known as Aylmer attached himself to what appears to be a feckless NY nobody named Brian (I say that because we don't actually get to know him at all before Aylmer attached himself to our protagonist.) The chemical the Ageless parasite release into Brian's brain is something like LSD mixed with Heroin, but it comes with a price. Brian must help Aylmer feed, and what could an ancient parasite possibly be hungry for? Why brains of course! Brian's life slowly falls apart as any attempt to reassert control is thwarted by the crafty critter, and surprise: it all ends tragically for everyone involved!