The team visits the San Luis Valley, home to decades of UFO reports, to investigate animal mutilations and meet a survivor of alien abduction.

In Roswell, New Mexico, the epicenter of UFO activity, the team sees a video of an alleged UFO crash and investigates the site of the incident.

Since 1993, residents in the Phoenix area have reported sightings of mammoth wedge-shaped objects, and the evidence includes a convincing video.