Circle of Magic series Book Six

For as long as Randal can remember, Brecelande has been a kingdom without a ruler. Princess Diamante, the true heiress to the throne, has been hidden in Elfland, unable to return to her own world until the spells that guard her are broken.

Now Randal, Lys, and Walter begin their most important mission of all: to rescue the princess and restore her to the throne. Entering the magical realm is not easy, even for a wizard. BUt more dangerous still are the battles that await Randal and his friends in Breceland. For Lord Hugo de la Corre has declared himself High King, and unless he can be stopped by Midsummer's Day, chaos will reign.