Extra-terrestrials Tia and Tony are back in this sequel to ESCAPE TO WITCH MOUNTAIN. When they arrive on Earth for a visit in New York, it isn't long before the evil Dr. Gannon (Christopher Lee) discovers Tony's supernatural powers and devises a plan to use the boy to conquer the world! Both Tony and Tia can communicate and move things with the power of their mind alone. When Gannon implants a device in Tony's brain that allows him to control the boy, the only hope is that Tia will be able to free Tony -- and save the world!