S1, E2: Hangar 1 files suggest that beneath mountain ranges, deserts and perhaps even one public airport, there exist Deep Underground Military Bases that are rumored to be the nerve center for some of the U.S. military's darkest secrets. Activities rumored to take place in these underground bunkers involve the study of UFOs, alien life, and black-project technologies. MUFON also exposes new, shocking files that reveal an alliance might exist between our government and an underground alien civilization. Is the U.S. government housing UFOs in these underground bases and could extraterrestrials already be living here on earth? We already look to the skies for proof of the existence of UFOs, but perhaps we should also be looking below our feet.