Professor Hebert Stock is a good man. This professor of nuclear engineering at the University of Wisconsin – Green Bay truly believes he is a force for good. All alone, he considers himself a mortal god. His accomplishments support his delusions – Strock here has harnessed cold fusion. He has shrunken this miraculous engine under the size of a clay pot. Not only that, he has brought the dead back to life.
Professor Strock has revived whole specimens and their amputated constituent pieces. Raw energy revives and intoxicates each of the monstrosities the man has packed with batteries and sewn back together. Each nameless creation is a step toward immortality. Yet Strock's discoveries are not primarily for himself. He helps mankind combat a scourge of vampires.
As much as Strock's genius, vampires and werewolves are real. Unchanged by time, these monsters now flourish in the Mack State Wildlife Area – ever since a Hellmouth had opened the earth south of Madison. The Hellmouth itself rent the earth then walked away.
The vampires in The Abhorred are immaterial, blood-sucking ghosts. They become solid when they consume blood. The master of the horde in the Mack State Wildlife Area is a pudgy, Midwestern-looking fellow. His name is Vlad Blaski. This vampire has discovered semi-permeability. All vampires need do is boil the blood they drink.
Having decimated the prey inside the Wildlife Area, the hungry ghosts eat werewolves – hairy Wild Men of Eastern European folklore. They look closer to Lon Chaney's Wolf Man than actually wolves or upright demons. And they do not transform under a full moon. The werewolves in the Abhorred are emaciated, wildly hirsute naked men cursed at puberty. How this curse is transmitted is an unimportant mystery.
Hunger drives werewolves unto Strock's private property – a hobby farm between Appleton, WI and Greenville, WI. These trespassers discover the professor's secret experiments. They meet his reanimated monster – a discolored, walking corpse that calls itself Angst. The reassembled boy bleeds motor oil. And a union is made. Professor Strock, his assistant Gloria, and Angst join forces with werewolves and they fight Blaski and his vampire horde.