Escape to Witch Mountain: Two orphan children escape from a scheming millionaire and discover they have come from another planet. Return from Witch Mountain: The entire city of Los Angeles teeters on the brink of nuclear disaster when the greedy criminals manipulate a young boy's supernatural powers for their own devious gain. But the youth's sister and a streetwise band of truants join forces in a desperate attempt to save the city from destruction....

Dexter Riley, a bumbling college student, develops a liquid that makes objects, including humans, disppear, and a gang of crooks steal the formula