Brother and sister, Tony and Tia Malone are young orphans with psychic powers. Aristotle Bolt (Ray Milland) is a nasty millionaire who hears of the children's talents and decides to trap them so he can he use their powers for his own evil doings. But the children manage to escape his clutches and while doing so they makes friends with a camper and the secrets of their past and how they have their psychic ability are brought to light. However soon the local people in the town are on the rampage after them - branding them as witches and running them out of town for the unusual occurences they have brought about. Then someone with greater powers than theirs takes hold - and the experience is truly marvellous!