The heroes storm the Temple of R’gu, the God From The Stars, to steal the Ruby of the Winged Master
Enter the Kingdom of Frog King in search of Treasure. What deal will you have to strike to get out alive?
All spell casters gain their abilities through a form of demon possession. So in order to gain magical abilites, PCs must track down and trap demons. Of course there are some pretty powerful demons, if the demon is stronger than the PC, the PC could find themselves subjugated to the Demon's will.