Graeme (Simon Pegg) and Clive (Nick Frost) are on a trip to Comic Con in Los Angeles, and afterwards they plan on visiting the most infamous UFO sites, including Area 51. They get more than what they expected when they encounter Paul (Seth Rogen), a highly intelligent alien from another planet. From that moment on, they get more than they bargained for when government agents attempt to track the alien down, and then begins the ultimate road trip to get Paul back where he belongs.
