The realm of magic is being threatened by the realm of logic, so the green wizard, Carolinus, decides to shield it for all time. Ommadon, the evil red wizard, stands in his way. Carolinus then calls for a quest that is to be led by a man named Peter Dickinson, who is the first man of both the realms of science and magic. It is Peter's job to defeat Ommadon.
| Actor | Role |
|---|---|
 Harry MorganCarolinus (voice) | Carolinus (voice) |
 James GregoryBryagh / Smrgol (voice) | Bryagh / Smrgol (voice) |
 John RitterPeter Dickinson (voice) | Peter Dickinson (voice) |
 Bob McFaddenSir Orrin Neville-Smythe (voice) | Sir Orrin Neville-Smythe (voice) |
 Alexandra StoddartPrincess Melisande (voice) | Princess Melisande (voice) |
 James Earl JonesOmmadon (voice) | Ommadon (voice) |
 Paul FreesSolarius / Antiquity (voice) | Solarius / Antiquity (voice) |
| DDon MessickGiles of the Treetops / Lo Tae Zhao (voice) | Giles of the Treetops / Lo Tae Zhao (voice) |
 Victor BuonoAragh (voice) | Aragh (voice) |
 Larry StorchPawnbroker (voice) | Pawnbroker (voice) |
 Don McLeanThe Balladeer (voice) | The Balladeer (voice) |
 Ed PeckAdditional Voices (voice) | Additional Voices (voice) |
| JJack LesterInnkeeper (voice) | Innkeeper (voice) |
| NNellie BellflowerDanielle (voice) | Danielle (voice) |
| CCosie CostaGorbash (voice) | Gorbash (voice) |