Based on a Walt Disney film about Tony and Tia, the gifted aliens introduced in Escape to Witch Mountain (1967), this schlocky adventure has the two children on a California vacation, where Tony's ability to energize (that is, teleport) matter is soon observed by a ruthless scientist who has invented a deadly mind control device. Dr. Gannon thinks of the fame and power and his once-rich patroness thinks of the money, and soon Tony is hooked up to their command panel and spirited off to their basement laboratory. But the villains are unaware of the existence and similar powers of Tony's sister, who soon enlists Earthquake gang members Dazzler, Muscles, and Crusher in a rescue operation. Tia energizes everything from garbage and garbage cans to a truant officer's bus in a wild chase that ends at a plutonium processing plant, just in time to foil the doctor's attempt at nuclear terrorism. True, Tony and Tia could never have managed without their telepathic new friend Alfred the goat; still, with such powers the tightest fix becomes a pushover.