A Las Vegas cabbie enlists the help of a UFO expert to protect two siblings with paranormal power from the clutches of an organization that wants to use the kids for their nefarious plan.
In Las Vegas, the regenerated ex-con Jack Bruno works as taxi driver. During an UFO Convention at Planet Hollywood, the skeptical Jack picks up Dr. Alex Friedman, who will present a scientific lecture in the event. Then he is pressed by two henchmen of his former boss, the criminal Wolff, that wants to talk to him, but Jack does not want to return to the crime life. Jack fights and gets rid of them; out of the blue, he finds two teenager on the backseat of his cab. They tell that they are siblings, Sara and Seth, and they need to travel to a location outside Las Vegas in the middle of nowhere. Meanwhile the government finds a spacecraft that crashed nearby Las Vegas and is chasing the two alien; after the investigation of the men of Major Henry Burke, they discover that the two siblings are the alien. Jack Bruno, Sara and Seth are chased by Henry Burke's team and by the "Syphon"...

For many years, U.S. Nevada desert has been a "mysterious", and all sorts of strange phenomenon of. Some people say that this is because the alien spacecraft had landed in Wushan (Witch Mountain). One day, a taxi driver in Las Vegas, suddenly found in the car of a man and a woman two boys, and they will be super powers! Since then, the taxi driver's life was completely disrupted. To save the world are closely linked, and Wushan the secret government agents, the gang robbers and the alien have been pre-empted our "heroes" to seize the last chance? The film will be extensive use of special effects shots and computer animation, visual piece is a fully-fledged (as in next year's "Watchmen" and "Terminator").