In Tenderville, Oregon, Bill Williamson, Brendan Fletcher, a 23-year-old living with his parents, trudges through a life defined by a low-paid mechanic’s routine, overwhelmed by the constant swirl of TV sets, radios, and the loud political chatter of his only friend, Evan Drince, Shaun Sipos, a 21-year-old who seems intent on shaking up the town with his outspoken views. When his parents urge him to move out, he leaves for work, pausing to grab coffee and exchanging a sharp rebuke with the shop owner over a disappointing cup. At the shop, the seed of discontent grows; the confrontation foreshadows a night of escalating bravado that will soon spill out into the streets.
Back at home, Bill takes a macabre turn: he prints counterfeit money and assembles an AR-500 steel suit of armor, complete with a ballistic helmet and a paintball mask. With two submachine guns, two semiautomatic pistols, and two knives stowed away, he strides into the center of town, a walking contradiction between vulnerability and invincible armor. His first act of chaos targets the police, whom he incapacitates by detonating a bomb-laden van in their headquarters using a remote control. Then he walks the streets, firing at random with the submachine guns, all while taunting the coffee shop owner as onlookers scatter. When two officers return fire, his armor absorbs the bullets, and he kills both officers in the line of sight. He makes a chilling detour into a salon where several women are hiding; he removes his mask to order a drink, but then, realizing his moment of exposure, he returns and kills everyone present.
The spree continues as Bill slips into a bingo parlor, where he orders a sandwich and harasses the host, leaving without firing a shot because he deems the elderly patrons already near the edge of life. He then enters a local bank and wipes out the security guard before turning his attention to the employees and customers who attempt to subdue him. The raid culminates in a swift robbery; the manager is forced to empty a safe’s contents into a plastic trash bag. Outside, Bill secretly exchanges the stolen money for his own counterfeit bills and burns the bag in a trash can, shouting that money is worthless and a core cause of the world’s problems. The violence intensifies as he later murders a restaurant waitress to reinforce the notion that Evan — who had argued with the waitress earlier — might be the killer.
Concerned and curious, Bill then reaches out to Evan by phone. Evan, who has retreated to a forest nearby for a staged mano-a-mano paintball challenge, becomes a willing participant in the cat-and-mouse game that unfolds. Bill heads toward the forest, with Sheriff Melvoy, Michael Paré, leading a cadre of officers in pursuit. Explosives light the chase as Bill tears away from the city, and the standoff lands him in the forest where the net tightens around him. In a tense ambush, Bill mortally wounds Sheriff Melvoy by stabbing him and leaves him to die as he presses onward.
In the forest, Bill finds Evan and immobilizes him with a stun gun, then coldly places one of his pistols in Evan’s hand and shoots him in the head, creating the illusion of a suicide. He then piles Evan’s armor onto the body, dons the armor himself, and departs the forest with the weapons, burning any remaining evidence in a barrel. He returns home to facing his parents, who recount horrific stories about the day’s killings as they watch the news unfold. The broadcasts reveal the killer’s identity as Evan and report that the rampage has claimed at least 93 lives.
Back in his room, Bill prepares to leave, packing the stolen money into a briefcase. Meanwhile, the world learns more about Evan’s father, an activist from the Vietnam era who is being arrested and who claims his son’s innocence while pointing the finger at Bill. The story closes with Bill recording a home video in which he announces a departure on a personal quest to shrink the global population. The film ends with the somber note that he disappears from the public eye, and two years later, his video memoir resurfaces on the Internet, leaving a haunting legacy of a town forever changed by one man’s apocalyptic vision.
