The story of Forgotten Realms: Demon Stone revolves around the
adventuring party's unwitting intrusion into an age-old conflict between
two warring demonic armies; one led by a Githyanki Princess and, the
other, a Slaad Lord. After inadvertently releasing both demons back
upon the world after eons of imprisonment, it becomes the adventurer's
quest to right their wrong and restore order to the world of Faerun.