In Orc's Opal, the multiframed realities inhabited by Kelvin are threatened by the menace of the evil witch Zady. The Prophecy of Mouvar is running its course in the many frames of reality inhabited by Kelvin Knight Hackleberry and his family. The two Kingdoms joined to form Kelvinia have now been united with three others, to make a great confederation under the rule of the young twin kings, Kildom and Kildee. And Kelvin has earned some time to rest with his family—Heln and their children Charles and Merlain ... and the one other.