In the Australian outback a father exacts his revenge on the men he views are responsible for the death of his young adult daughter. She was found dead of a heroin overdose. Then, he gets a videotape in the mail which shows her all drugged out in a sex film. So he tracks down the distributor, then the men who made the film, killing them one by one. Basically, he's taking out all of his frustration on them. Along the way the guy picks up a young hitcher named Alice who reminds him of his daughter. They become friends. He doesn't tell her what he's doing on his road trip, just that he has "business meetings", so she's a bit surprised when everything comes out in the open.
This is an effective revenge thriller. intensely violent, though the majority of it is off screen. Highly recommended.