More people in the UK believe in the existence of aliens than in God, and over a quarter of us think that evidence of UFOs has been covered up by the government.

Writer and comedian Dan Schreiber is fascinated by these beliefs and goes in search of the most current ET conspiracy theories in a bid to track down the people behind them. He embarks on a rollercoaster journey across the UK meeting the biggest voices in the UFO community: learning that Jesus was an alien, that humanity is ruled by an evil reptilian overlord, and that there is sentient black goo living in the sewers, threatening our very existence...