Jack Bruno (Dwayne Johnson) has given up a life of crime and now drives a taxi in Las Vegas. Jack gives Dr. Alex Friedman (Carla Gugino) to a UFO Convention at Planet Hollywood. He takes on a pair of siblings, Sara (AnnaSophia Robb) and Seth (Alexander Ludwig) for the next ride. Soon, Jack is puzzled to find that they are being chased by two sets of people – Major Henry Burke (Ciaran Hinds) and...

Jack Bruno (Dwayne Johnson) has given up a life of crime and now drives a taxi in Las Vegas. Jack gives Dr. Alex Friedman (Carla Gugino) to a UFO Convention at Planet Hollywood. He takes on a pair of siblings, Sara (AnnaSophia Robb) and Seth (Alexander Ludwig) for the next ride. Soon, Jack is puzzled to find that they are being chased by two sets of people – Major Henry Burke (Ciaran Hinds) and his men who know that the siblings are aliens and Siphon (Tom Woodruff Jr.), a killer from outer space. Will Jack, Sara and Seth survive the ordeal?