In the opening sequence at Clark Air Base in Washington, D.C., four airmen scramble to escape as a pursuing squad closes in. The attempt ends badly for most, and one man witnesses a flying saucer streaking into view, its energy weapon reducing him to a charred remnant. The base atmosphere is tense and chaotic, laying the groundwork for a story that blends military secrecy with an otherworldly threat.
Frank McCall is an overqualified photojournalist working for the sleazy National Scandal, chasing sensational stories about two-headed dogs and alien abductions. When the airman’s charred corpse surfaces in the press, he’s assigned to the case. Government agents try to keep him out, but his determination pushes him to infiltrate the base to capture footage of a top-secret fighter plane that is set to be demoed that night. The aircraft relies on an experimental software system called A.S.M.O.D.S., a cutting-edge tech that suddenly misbehaves during the demonstration and crashes the jet. As disappointed brass drift away, a tense encounter unfolds with Capt. Harry Anders, who orders McCall seized and his camera confiscated.
Sinister operatives in black suits seize McCall and haul him to a storage compartment for a glowing green injection and a brainwashing session, while Anders and Colonel Faraday attempt to intervene; the agents end up shooting themselves in a standoff that leaves the fate of the intruders ambiguous. Anders steps in to take custody of McCall, and Faraday heads back to the base. Then the impossible happens—the same flying saucer from the opening reappears. Anders fires on it but has no effect, and McCall uses a backup camera to document the craft. With their pursuers closing in, the duo escapes, dodging more agents in black as they race to lock themselves inside the base.
Back inside, McCall’s camera is seized again, and he must rely on prints he manages to smuggle out. He overhears Anders speaking with the General and discovers a startling truth: A.S.M.O.D.S. has tapped alien technology recovered from a crashed spaceship in the New Mexico desert, and this technology seems to possess a mind of its own. When the men in black force their way in once more, McCall escapes with Anders in a stealth fighter, the pair engaging in a brief dogfight with Clark’s F-16s before securing air support from the Pentagon.
Questioned afterward, McCall and Anders convince General Anheiser that A.S.M.O.D.S. has infiltrated the base computers via the intranet and has brainwashed the soldiers. The generals agree to investigate the next day, and McCall makes a bold decision to leave his job at the Scandal, realizing he’s stumbled onto a story of historic proportions.
But the danger is far from over. At the airbase, a now-brainwashed Faraday—accompanied by a unit of loyalists—enters the subbasement, which has been hollowed out into a cavern. There, he unveils the alien plan: the technology has cannibalized the base’s own hardware to assemble a colossal robot named HARV, designed to conquer the world after a nuclear strike on China and Russia. McCall pieces together a chilling twist: as the alien programming seeped into A.S.M.O.D.S., so too did A.S.M.O.D.S. begin to shape the alien’s goals, imprinting it with a nationalist drive to destroy America’s foes.
The trio fights their way through Faraday’s guards, and HARV’s controllers are exposed to the same vulnerability: human tech and willpower can be turned against a machine bent on domination. Faraday dies in the resulting confrontation, and McCall, Anders, and their allies search the basement for weapons to stop HARV. They discover a rocket launcher and two rockets; the first shot misses, but the second is a direct hit with only a second to spare before HARV can unleash its own missiles. In the aftermath, newspapers hail McCall as a hero, while the National Scandal proclaims the entire alien invasion a hoax—revealing the strange, persistent tension between sensational reporting and hidden, real threats that defined their world.