Three artifact weapons have gone missing and you adventurers have been sent after them. Going only by the riddle left on the thief's note, part ransom part guide, You stand before White Plume Mountain, stronghold of the supposedly long dead Wizard Keraptis.
A traditional "funhouse" dungeon, White Plume Mountain begins with the archmage Keraptis stealing three artifacts and leaving cryptic poems with their former owners. The players are hired to recover the items, and find a bizarre dungeon in the side of the eponymous volcano. TSR 9027