Conan and his people parley with the fierce lord Jehungir Agha, who brings along a beautiful woman, Octavia. As part of a plot to end the barbarian's life, she lures him out to the once-deserted island of Xapur. There, Jehungir's murderous plans fall apart - the city has been resurrected, and with it, a creature of nightmares! Will Conan escape with his life?