In a rough part of town, Smith, a
carrot-eating
drifter and ex-
black-ops soldier, sees a pregnant woman fleeing a
hitman. Smith kills the hitman by stabbing his head with a carrot and retrieves the woman's pistol. A few more thugs arrive, led by the ruthless Hertz. The woman goes into labor and Smith delivers her baby boy during a shootout, but the mother is shot dead. Smith narrowly escapes with the newborn, where he abandons the baby in a park, hoping someone will adopt the baby, but a passing woman is killed with a shot from Hertz's
sniper rifle. Realizing that Hertz is trying to kill the baby, Smith tries to leave him with a
prostitute named Donna Quintano. Hertz arrives at the brothel and tortures Donna for information. Smith returns and kills Hertz's henchmen. After a brief confrontation, Smith shoots Hertz and leaves with Donna and the baby. Hertz survives due to his
bulletproof vest. Taking Donna to his hideout, Smith realizes that the baby (whom Smith names Oliver) stops crying when he hears
heavy metal music. Smith concludes that Oliver's mother lived near a heavy metal club. Pursued by Hertz, Smith shoots his way out of the hideout; he and Donna then head to the only heavy metal club close to where Smith first encountered Oliver's mother. Above the club they discover an apartment with medical equipment, two deceased pregnant women, and a number of deceased security personnel. Observing that the apartment had been maintaining sperm samples from a single person, Smith concludes that the women were artificially inseminated to give birth to matching
bone marrow donors for that person. Smith and Donna evade a professional team of agents that have arrived to clean up the scene and make it to a hotel with Oliver, where Smith and Donna have
intercourse. A squad of gunmen attack, where Smith shoots all of them without stopping intercourse with Donna. Smith notices that the gunmen had the newest Hammerson pistols which are not yet available to the public. Realizing that major monied interests are involved, Smith brings Donna and Oliver to a war museum and hides them in a
M24 Chaffee tank for safekeeping. Smith infiltrates the Hammerson factory and hears Hertz and Hammerson saying they do not want the frontrunner for the US presidency to implement his sweeping gun control proposals. Smith also notices that Hammerson owns a
German Shepherd named Duchess. Smith stealthily booby-traps the facility with firearms, allowing him to kill most of Hertz' thugs and the factory's security personnel and escape. During a shootout, Hertz reveals that he learned about Smith's background and that his wife and son were killed in a shootout at a burger joint. After returning to the tank where Donna and Oliver are still hiding, Smith sees an article about Senator Rutledge, a
Democratic presidential candidate who favors stricter gun laws. Smith deduces that Rutledge has cancer and requires a bone marrow transplant, and that the apartment-turned-donor factory that he discovered earlier was for Rutledge. Various women at that facility were artificially inseminated (with Rutledge's sperm) to create donors. Without a matching transplant donor, the senator will die; Smith concludes this is why Hertz and Hammerson want Oliver (the only living potential donor for Rutledge) dead. Smith tells Donna to leave town and contacts one of Rutledge's security personnel (nicknamed "Go-to Guy") to request a meeting with Rutledge. Meeting on an airplane, the senator confirms Smith's suspicions but Smith notices dog hair on Rutledge's trousers. Deducing that the hair belongs to Duchess and that the Senator has made a deal with Hammerson, Smith takes Rutledge hostage. Hertz and Hammerson appear and reveal that they agreed to help Rutledge find a bone-marrow donor, on the condition that Rutledge protects Hertz's constitutional right to bear arms when elected president. Smith takes Senator Rutledge to the airplane's cargo hold, and explaining that his assassination "will cause public outrage and trigger immense support" for his
gun control proposals, kills the senator. Smith parachutes from the airplane and kills several pursuing henchmen, but is himself shot and collapses after he lands. Smith awakens in Hammerson's mansion; Hertz tortures him, breaking his fingers in an attempt to learn where Smith sent Donna and Oliver. As Hertz prepares to cut Smith's eyes, Smith breaks free and kills Hammerson and several thugs. Struggling to use his gun, Smith places live bullets between his broken fingers and detonates them with a fireplace, critically wounding Hertz. Smith and Hertz struggle, but Smith finally kills Hertz. Smith travels with Duchess to an
ice cream parlor, where Donna works as a waitress while watching Oliver. Surprised to see each other alive, Smith and Donna kiss passionately. When amateur armed robbers enter the parlor and despite his hands being bandaged, Smith shoots them by using a carrot to pull the trigger. ==Cast==