Ohio State astrophysicist Dr. Allen Hynek is recruited by the Air Force into their top-secret program investigating UFOs called Project Blue Book. Partnered with Captain Michael Quinn, they investigate the case of a military pilot who survived a dogfight with an alien craft. Based on the "Gorman Dogfight" case.

When the citizens of Lubbock, Texas witness a mysterious V-shaped craft in the night sky, Hynek and Quinn are brought in to investigate the mass sighting. Based on the “Lubbock Lights” case.

Quinn and Hynek follow clues that lead them to a secret group who have witnessed strange lights.

Mysterious green fireballs nearly cause a nuclear disaster during a weapons test, and Hynek and Quinn must investigate how it could have occurred.

When a film emerges documenting an Army platoon under UFO attack, the Generals send Hynek and Quinn in to investigate, where they find the soldiers not only suffer from physical effects of war, but psychological ones as well.

Washington D.C. is invaded by UFOs, and Hynek and Quinn must uncover the true nature of the threat before it's too late.

When sensitive material is stolen from Generals Harding and Valentine, Hynek and Quinn realize that their culprit is far closer to home than they could imagine, but so is undeniable evidence of a UFO conspiracy.