WARNING! SPOILERS FOLLOW!
From the back cover:
"And then there were eight...
THE EIGHT KINGS have fooled the people of Ersille. Not only did King Ovar rule, he ruled eight times over (give or take a court wizard), created anew each day by the Wizard Zayene. he was a complacent king, but set upon evil ways, for his (or was it their?) minds were controlled. you see, the real King Ovar was taken prisoner by Zayene some time ago. And now, instead of wanting Ovar dead, the good people of the Kingdom want the old codger saved! What's a regent to do?
THE EIGHT KINGS fully describes a wizard's dimension wherein the assassins turned saviors must adventure to rescue good King Ovar! This adventure modules is recommended for advanced FRP player-characters skill levels 9-12. It is compatible with the most popular ADVANCED FRP game system(s)."