The dragon Basil, now grown mighty in strength, size, and courage, looks for what is causing the chaos that plagues Avalon, while his friend, Merlin, is distracted by problems with his son, Krystallus, and vengeful Doomraga plots from within the haunted marshes.
Basil, a once tiny lizard who is now the greatest dragon in Avalon, must save the city from destruction when the wizard Merlin is nowhere to be found and an army of warriors, a deadly plague, and fire dragon threaten to destroy the kingdom.