Jerry and Zeb travel to the dragon realm, their intent to slay the beasts. But someone has followed them… With the task of slaying dragons ahead, Jerry and Zen enter the realm of Vildas, a part-desert, part-earthy plane. The myth has it that The Beckoner and The Marked One survive the dragon fight, but with someone else in the realm with them… Circumstances ensure Zeb must conjure a demon for help in seeking out an invisible threat—a threat that can change destiny and end their lives. Part Four of The Marked One series.