With the witch defeated, the elves begin preparations to once again take up their vigil, guarding a black dragon from Crag named Zoltan. Merlin's last enchantment has kept the dragon asleep for centuries, but when Gabriel brings Hob along to inspect the dragon, the bumbling dwarf finds Merlin's staff and accidentally breaks the enchantment. Gabriel and Hob escape from the dragon into a cave that leads them into Kahzidar; the dreaded gnome mines, where they are captured by the mad gnome king Ringwald Stonebreaker. Ben, Casey, and their Grandma must join forces once again with Amos, the shape shifter, to save Camelot from the dragon that's bent on destroying it. But first, they must rescue their friends from Kahzidar!