The world of humans is believing less in magic and more in science. Due to this dwindling belief in magic, three wizards must create a shielded "last bastion" of magic. But the wizards' evil brother doesn't want to give up his powerful realm and move into a "retirement village" and so he plots to corrupt humans. To help fight against him, Carolinus the green wizard enlists the aid of a modern bookworm, scientist, and writer named Peter Dickenson.