Plot

As a vicious wild boar terrorizes the Australian outback, the husband of one of the victims is joined by a hunter and a farmer in a search for the beast.

A vicious wild boar terrorizes the Australian outback. The first victim is a small child who is killed. The child's granddad is brought to trial for killing the child but acquitted. The next victim is an American TV-journalist. Her husband Carl gets there and starts to search for the truth. The local inhabitants won't really help him, but he is joined by a hunter and a female farmer to find the beast.—Mattias Thuresson

New Yorker Carl Winters heads to Gamulla in the Australian Outback upon news that his wife Beth Winters has gone missing. Beth was there on behalf of the World Animal League, an activist group, doing a story on the slaughter of kangaroos and wallabies to near extinction, they being processed into cheap pet food. Her presence did not sit well with many locals in the business. While two meat processing workers, brothers Benny and Dicko Baker, were partly responsible for what eventually befell Beth, Carl has his focus divided upon arrival in meeting Jake Cullen and and subsequently Sarah Cameron, and eventually facing first hand with what they deal. Sarah has a grant to tag and thus follow the local wild boar population, while Jake, two years ago, was acquitted in the disappearance of his grandson due to insufficient evidence. Jake's story, incredulous to many, is that his grandson was carried off and assumed killed by a giant murderous razorback, a wild boar, giant in being the size of a rhinoceros. Since, Jake has made it his sole mission to find and kill that razorback. While rumors abound that Beth died in an accidental fall down a mine shaft, Jake believes that the razorback may have killed her as well. Carl's attention remains divided in believing the Dicko brothers were also responsible in some way for what happened to Beth, he after the brothers while assisting Jake and Sarah in what may be a kill or be killed situation with the razorback.—Huggo

Jake Cullen (Bill Kerr) is babysitting his grandson at his house in the rural Australian outback when a massive and unseen razorback boar attacks him, smashing through his house like a high-speed freight train and dragging away his grandson to devour alive. Jake is accused of murdering the child and while his account of the events are met with high skepticism, he is acquitted due to lack of evidence. The event destroys his credibility and reputation however and he vows revenge on the boar.

Two years later, wildlife reporter Beth Winters (Judy Morris) journeys to the outback to document the hunting of Australian wildlife to be processed into pet food at a derelict factory. While driving at night, she is driven off the road by two local thugs, Benny and Dicko Baker (Chris Haywood and David Argue respectively), who attempt to rape her only to be chased off by the same boar that killed Jake's grandson. Beth attempts to take shelter in her car, but the hog rips off the door, lacerating her groin with its tusk before dragging her out to be eaten. With no witnesses, her disappearance is subsequently ruled an accident resulting from falling down an abandoned mine shaft after leaving her wrecked car.

A few months later, Beth's husband Carl (Gregory Harrison) arrives in in Australia to search for her and encounters Jake, whom Beth interviewed during her initial report. Jake refers him to the local cannery where he meets Benny and Dicko whom he convinces to take him along on their next kangaroo hunt, only to be abandoned by them when he spoils a potential kill. Carl is then attacked by a herd of wild hogs, spurned on by the giant boar, who chase him through the night and force him take shelter atop an abandoned windmill. The next morning, the hogs succeed in knocking over the windmill, but Carl is saved by landing in a pond at the windmill's base that is too deep for the hogs to cross over.

Once the hogs leave, Carl attempts to make his way back to civilization, all the while suffering from dehydration inspired hallucinations before finally reaching the house of Sarah Cameron (Arkie Whiteley), a friend of Jake who has been tracking and studying the local hog population and the only one who believes his story of the giant razorback. While recovering at Sarah's house, Carl forms a friendship with her and learns that something has been causing the wild hogs excess stress, leading them into unusual behavior such as increased aggression and cannibalizing their own young.

Meanwhile, after learning that Carl had seen the razorback, Jake sets out for the pumping station and manages to shoot it with one of Sarah's tracking darts. He also finds Beth's wedding ring in the boar's scat which he returns to a grieving Carl, who resigns himself to returning home.

After overhearing a radio conversation suggesting that Jake knows what really happened to Beth Winters, Benny and Dicko, fearful that Jake is attempting to implicate them in her death, attack him at his camp, breaking his legs and leaving him to be killed by the razorback. His remains are later found by Sarah and Carl, along with marks in the dirt made by Dicko's cleaver. Realizing that the brothers were responsible for both his wife and Jake's death, Carl attacks Benny at his and Dicko's hideaway, interrogating Benny by lowering him into a mine shaft before leaving him to plummet to his death.

As Sarah rounds up a posse to hunt down the razorback using the tracer Jake shot into it, Carl corners Dicko at the cannery when the razorback suddenly appears and mauls Dicko before Carl can shoot him. The razorback then chases Carl into the factory when Sarah suddenly arrives and is seemingly killed by the boar, who continues to pursue Carl even after being impaled through its throat with a broken pipe. In its maddened rampage, the razorback ends up damaging the cannery's generator which sends the machines running out of control. Carl lures the boar up onto a conveyor belt that throws it onto a giant fan, chopping it to pieces. After shutting down the machinery, Carl finds and rescues Sarah, who had merely been knocked unconscious, and the two embrace.