Graeme Willy and Clive Gollings are British comic book enthusiasts and best friends who travel to the United States to attend the annual San Diego Comic-Con International, and to take a road trip through the Southwestern United States to visit sites significant to Unidentified flying object. While driving on a remote desert highway at night, after a tense situation with some rednecks in a diner, Graeme and Clive observe a car driving erratically and then crashing. They stop to investigate and offer assistance to the driver, who turns out to be an alien named Paul. Clive faints, but Graeme agrees to assist Paul and gives him a ride.