Conan must scale the forbidden Mount of Crom to prevent the release of the ancient god-demon Shuma Gorath, imprisoned by Crom himself! But the witch queen Vammatar and her necromancer husband, Kulan Gath, also seek the summit - and the iron-bound Books of Shuma-Gorath, with which they plan to free the malevolent god and bring it under their own baleful control!