After a nuclear war has wiped out humanity, a magical utopia populated by elves has arisen on the Isle of Hope, Ynis Aielle.
The island's peace is threatened by a sinister master of the mystical arts who has embraced the forbidden third magic, the most deadly sorcery of all.
Captain Mitchell, Doc Brady, Billy Shank, Reinheiser, and Jeffry "Del" DelGiudice of the Unicorn find themselves regarded as the ancient ones of prophecy, destined to change the world, and ally themselves with Brielle, the Emerald Witch of the Woods, and Ardaz, the Silver Mage.
Morgan Thalasi, the Black Warlock, returns with even greater power than before: with the Staff of Death, he can raise an unstoppable army of the dead.
To defeat him, a mixed company sets out for Talas-dun, to retrieve a mysterious treasure guarded by a dragon.