Colonel Pete Moore Glenn Ford commands the Whitney Air Force Base 458th Radar Test Group, grappling with persistent electrical troubles that threaten the performance of their aircraft. To isolate the problem, he selects a four-man crew for Flight 412, with Captain Roy Bishop David Soul at the helm, joined by Lt. Tony Podryski Greg Mullavey, Captain Cliff Riggs Robert F. Lyons, and Lt. Ferguson Stanley Bennett Clay. The mission is portrayed with a clinical, procedural eye as they push the jet and its limits on a routine test flight.
Shortly after takeoff, the Grumman Gulfstream II picks up three radar blips, and the tension shifts from technical troubleshooting to a possible mystery in the skies. Two fighter aircraft are scrambled to investigate the anomalous signals, yet both disappear inexplicably, evaporating from radar and sightlines alike. The crew’s sense of normalcy fractures as the situation escalates beyond a simple avionics hiccup.
An unnamed top-level military intelligence group—referred to within the film by their radio call sign, "Digger Control"—orders Flight 412 to land and then diverts the crew to a remote desert airfield. There, the four-man team is whisked away to a stark barracks for an 18-hour debriefing conducted by a Special Investigation Division (SID) unit. The debriefing is designed to erase or sanitize any memory of a sighting, and the crew is treated as potential witnesses to a national-security-enforced cover-up. Meanwhile, the aircraft is hidden away in a dilapidated hangar to prevent search-and-rescue teams from discovering it. The public-facing narrative, as shaped by SID, paints Flight 412 as having vanished into thin air, and Moore, with the support of Major Mike Dunning, vows to uncover the truth behind the disappearance.
As the interrogation intensifies, the truth begins to poke through the bureaucratic fog. Maj. Mike Dunning [Bradford Dillman] becomes a crucial ally to Moore, even as the SID insists on keeping tight control over the information. Within the confines of the barracks, Bishop tries to escape the tightening grip of the inquiry, and SID's hardline director, Colonel Trottman [Guy Stockwell], makes it clear that national security overrides any personal accounts. Some crew members accept the sanitized version they’re offered, while others — including Moore, Bishop, Ferguson, and Riggs — resist the narrative and seek help from higher authority.
The resistance finds a glimmer of possibility when General Enright [Kent Smith] steps into the conversation. In a private moment, Enright reveals that wreckage from the missing jets has been found, albeit only in small, fragmentary pieces, and that the pilots themselves are still unaccounted for. The implication is clear: there has been a deliberate effort to downplay or suppress the full extent of what occurred. Moore presses on, despite stern warnings from Dunning to abandon the pursuit, and the consequences for those who push the issue are severe.
The investigation pauses briefly but the mystery persists. Four months later, the exercise is repeated—this time with more eyes watching and more stringent oversight. Once again, mysterious objects appear in the skies and the same unsettling sequence plays out: the crew is brought in for a debrief, the results are steered toward a controlled conclusion, and the matter is once again dropped from official concern. The pattern repeats the chilling lesson that those who cooperate with the program advance, while those who resist see their careers quietly sabotaged.
In the end, the film sketches a bleak portrait of posturing and policy where personal courage and a quest for truth clash with institutional inertia and security priorities. Moore faces an uphill climb toward recognition and advancement; his career stalls, and he retires earlier than he would have liked, a quiet casualty of a system that rewards conformity over inquiry. The story leaves viewers with a stark meditation on accountability, secrecy, and the high costs paid by those who challenge the men in power, all anchored by a cast of military personnel whose fates become collateral in a hidden war over truth.
