After centuries of hiding in the sanctuary of the Underworld Cavern, Ghon Coal leads the Shendoa army to attack Grack's castle in The Battle of High Hill. Kaing, an exiled military leader of the Shendoa army provides support for his brother Ghon as the talents of Grack's general Prince Sarle push the Shendoa army to its limits. Grack's Dragon Riders continue to hunt the elite Watchers of Shendoa, getting closer and closer to Kaing. With each encounter proving more difficult to survive and the battle reaching a tipping point, Kaing prepares to face the riders in a final showdown.