Conan, adrift at sea, escapes his captors with fellow prisoner Suty and a box he believes contains treasure. Opening the chest, the color sands inside gift him with a magic map that only he can see in his mind. Following the map to the Stygian city of Kheshatta, Conan finds much more than he bargained for, as others are after the treasure-including a dark sorcerer with an unexpected plan! A journey into the city's mysterious underground reveals more mysteries, harkening back to the earliest times of the Hyborian Age.