A former U.S. Navy radar operator emerges from the shadows to reveal the terrifying day it rained UFOs. For the first time, U.S. Navy personnel unveil new details of the stunning encounter, including a shocking capability that could explain why UFOs are sighted over oceans. Evidence of a U.S. military coverup emerges, as the team gets a major lead guiding them to an island with a long, clandestine history of UFO activity. Connections between UFOs and secret U.S aircraft must be explored.

The list of military eyewitnesses describing strange and threatening unidentified craft in U.S airspace is growing. And now, a U.S. Navy radar operator has provided something more: Actual coordinates where UFOS appeared and disappeared. Lue Elizondo and a new partner follow the trail, and find that these unidentified craft are still seen. New eyewitnesses provide chilling details, and a correlation to U.S military sightings. As the reports mount, Lue closes in on a location where visitors are not allowed: Ground zero for the sightings.

Evidence continues to mount and patterns emerge, as a group of former U.S. government insiders seek the truth behind UFOs. A shocking new encounter pulls them to another part of the U.S.A. where two more military eyewitnesses risk their career to recount what they saw, describing a mass sighting of UFOs within striking distance of one of the most important cities in the U.S. video, authenticated for the first time, shows bizarre, unidentified craft with incredible abilities, but what the team learns next is chilling: The objects may follow ships and people.

The team follows a trail of evidence connecting UFOs to the most destructive weapons in human history. A former U.S Air Force Colonel discloses an encounter on Christmas Eve 1980, while another former Air Force officer describes a UFO-related injury. Was the U.S. military planting UFO misinformation to distract attention from top secret test, or are they hiding an even more ominous threat?

Following a lead, the team goes to Italy to probe a case where an UFO allegedly shot down a helicopter. While there, high-ranking military officials drop a bombshell. Former Senator Harry Reid goes on the record in wanting to get the truth about UFOs.