[3] The Gates of Firestorm Peak is an adventure in which the Elder Elves opened a portal many years ago deep inside a mountain, which allowed them to explore new worlds.

[2] The elves were able to power this portal using the comet called the Dragon's Tear, which appears on a 27-year cycle, and enabled them to connect directly with an alternate reality.

Decades ago, the evil conjurer Madreus bypassed the duergar and gained mastery of the Far Realm creatures residing in the complex underneath Firestorm Peak.

In the last five years, he gained control of the duergar, and his studies and experiments have begun to cause manifestations of warped behavior in nature and society to spread beyond the legendary mountain.

If not stopped by the player characters, the gate will eventually provide Madreus with the energies and allies he needs to bring the Far Realm's madness to the rest of the world.