The untold true story of Bob Gimlin and Roger Patterson, two former rodeo cowboys who, in 1967, went on an expedition in the forests of Northern California and recorded the first ever motion picture footage of the creature known as Bigfoot. But as they attempted to cash in on their discovery, distrust, greed and rumors of a hoax threatened to tear everything apart. This is the story of America's first viral film, which took Bigfoot from an obscure rural folklore to a popular household name.