Dr. Allen Hynek is recruited into the Air Force's top-secret UFO investigation program, and investigates the case of a military pilot who survived a dogfight with an alien craft.
Hynek investigates a Scoutmaster's disappearance after he and his troop witnessed a strange craft hovering in the woods; Quinn is pulled into a rogue mission for Harding.
Hynek and Quinn investigate a film documenting an Army platoon under UFO attack, and find the soldiers not only suffer from the physical effects of war, but psychological ones as well.