While driving alone through the Australia outback with his dingo, the truck driver Patrick Quid becomes aware that a serial killer is attacking women and he suspects that the driver of a green van is the murderer and is getting rid of the bodies in pieces in plastic bags burying them in the desert. On his way to Perth with a load of pork meat, he gives a ride to the hitchhiker Pamela Rushworth and tells his theory about the killer to her. When they park in a gas station, they see the van and Pamela decides to break in the car to investigate. When Pamela disappears, Pat pursuits the van while he becomes the prime suspect of the police.