In The Standing Stone, a tiefling sorcerer named Dyson discovers a circle of standing stones constructed centuries ago by druids to hold their annual rituals; the druid community was later destroyed by the great dragon Ashardalon. Dyson uses the magic of the stones to replace people with animals transformed into humanoid form, loyal to him. Dyson encounters the player characters in the village of Ossington and tries to manipulate them into eliminating the remaining enemies standing in his way.