So what do you get when a couple of British nerds decide to go on a tour of UFO hotspots in the USA? They of course run into Paul . From Google: "For the past 60 years, a wisecracking alien named Paul ( Seth Rogen ) has resided at a top-secret military base in America's UFO heartland. When Paul decides he has had enough of Earth, he escapes from the compound and hops on the first handy vehicle -- a rented RV manned by two British sci-fi nerds named Graeme ( Simon Pegg ) and Clive ( Nick Frost ). With federal agents and the father of an accidental kidnap victim on their tail, the two hatch a crazy plan to help Paul return to his spaceship."