Madness is the only way out of the Underdark is an underground kingdom of miracles; A huge, devoured labyrinth, where the fear alone governs, home gruesome monsters who have never seen the light of the sun. Here, the Darkelf Gromph Baenre, Erzmagus of Menzoberranzan, knew a dark spell that ignites the magical energy of the Underdark and thus creates a portal in the demon rich of the Abyss. However, with what occurs from the portal, he did not expect, and from that time to the insanity of the Underdark increases immeasurable and even begins to shake the foundation of the forgotten richs. Finish this madness before he devours you! An adventure for Dungeons & Dragons for Adventurer of Steps 1 - 15. For use with the fifth edition of the Player's Handbook (Player Guide), the Monster Manual (Monster Manual) and the Dungeon Master's Guide (Spieller's Guide).