A desperate cry for help from a group of elves sends the party on a long journey to Blackmoor, where they stumble across something truly evil. A wizard has completely defiled the land, destroying, even, the sacred grove of the elves. The wizard was nearing the completion of his scheme, to bring forth a great evil from another plane, when the party arrives and disrupts his plans.
Recognizing his ultimate defeat the wizard summons the demon and destroys his staff in the process. Without the ability to control the demon, the wizard soon becomes its prey. The demon mutilates the body of the wizard and then takes flight, rapidly disappearing from view. The party has won only a partial victory this day. Where will this demon turn-up next?