For years, stories have circulated about a secret place in the middle of the Nevada desert, known for unexplained phenomena and strange sightings. It is called Witch Mountain, and when a Las Vegas cab driver finds two teens with supernatural powers in his cab, he suddenly finds himself in the middle of an adventure he can't explain. When they discover that the only chance to save the world lies in unraveling the secrets of Witch Mountain, the race begins, as the government, mobsters and even extraterrestrials try to stop them.

A Las Vegas cab driver teams up with two aliens, disguised as teenagers, to help them recover their lost spaceship so they can return home and save their planet and ours.