Josh Gates starts his extra-terrestrial search with a visit to NASA and an alien-hunting expedition in Chile, where scientists make new discoveries.
Josh is on Easter Island, where ancient alien theorists believe aliens visited millennia ago. And, he goes meteorite hunting in Zimbabwe.
In Zimbabwe Josh interviews witnesses to one of the largest ever UFO sightings. Then, in England, he examines a case known as "Europe's Roswell."
Josh's search for alien life ends in the USA, with a hot case in Arkansas. And, there's shocking new evidence in the Roswell crash.