It's the exciting conclusion to Roy Thomas' adaptation of the Cormac Mac Art stories by Robert E. Howard (creator of Conan)! Cormac faces one of the deadliest god-beasts ever to crawl upon the face of the Earth- a Shoggoth- one of H.P. Lovecraft's creations (Howard, in addition to Conan and Cormac, also wrote some stories using the creatures crafted by Lovecraft).