Unknown to even the mightiest of the great sorcerer-kings¸ a fire is stirring deep beneath the barren soil of Athas. Sheltered by the titanic bulk of the Black Spine Mountains¸ a terrible force has ripped open the very fabric of time and space. Now a shimmering portal stands open and a long-forgotten enemy assembles its sinister forces to invade the kingdoms under the dark sun.
The only thing that stands in the way of this terrible fate is a band of heroes. Assembled from the four corners of this tortured world and bound together by the tangled cords of fate¸ they must face an enemy the likes of which they have never seen before. The odds are against them¸ but they dare not fail. The fate of the world is in their hands.
Black Spine is an adventure for 4 to 6 characters of 10th through 13th level. The previous flip-book modules (Black Flames¸ Merchant House of Amketch¸ and Marauders of Nibenay) precede this adventure¸ but they are not necessary to enjoy Black Spine.