Dungeon Party links a fantasy world and the people playing in it. When longstanding personality conflicts erupt, the volatile Randall Keller secedes from Alan Crandall's gaming group. In pursuit of a coveted prize at an upcoming convention, Alan replaces Randall with two female recruits who reinvigorate the campaign. Randall chooses a darker path by spreading infectious cynicism through the gaming community while plotting his revenge. When the Middle Mirth convention gets underway, Alan's group must stop Randall and his avatar before they devastate worlds both fictional and real.