When mysterious crop circles start appearing in fields around the UK, alien experts are convinced that they finally had concrete evidence of UFO activity. However, when two men come forward claiming responsibility for all the crop circles, it seems that the mystery has been solved. But, as experts look closer, cracks begin to appear in their story. Investigators circle the globe in search of evidence in their quest to determine whether life on Earth began in outer space and if aliens influenced mankind in ancient times. Did extraterrestrial beings visit Earth and share information about technology and influence human religions?