Fact1: Marcus best friend and Liz and Nina are driving through Australian outback breaking Craig 's arm, Fact2: road train pushes them off road, Fact3: Nina When looks after Craig wake up, Fact4: Craig opens rearmost trailer only for door to close itself behind him, Fact5: Liz having slept with Craig causing Liz to storm off
Output: Marcus Xavier Samuel, his best friend Craig Bobby Morley, and their friends, Liz Georgina Haig and Nina Sophie Lowe are driving through the Australian outback, when a road train comes up behind their SUV and pushes them off the road, breaking Craigs arm. The truck stops some distance up the road. The group approach it, but the driver is nowhere to be found. Distant gunshots are heard, and a crazed figure in the bush screams and runs towards them. Panicked, they commandeer the truck and drive away. The trucks radio turns on by itself. After four fall asleep, the truck drives itself off the road and up a hill. When the wake up, Nina looks after Craig while Liz leaves to search for it for search for a shack shes seen. Unable to start the truck, Marcus accompanies Liz. Nina discovers the trucks fuel tanks are empty, but finds a large pipe underneath the trailer, filled with a mysterious red fluid. Craig, tormented by visions of the hellhound Cerberus, finds a key to the trailers. He opens and enters the rearmost trailer, only for the door to close itself behind him. Marcus and Liz have a disagreement over her having slept with Craig, causing Liz to storm off. Marcus stays on the road and has a runin with the trucks driver, who shoots himself. Liz finds the rundown shack, where she finds unlabeled cans containing the red fluid. Thirsty, she drinks some, but quickly runs back after finding bloody remains. Liz and Nina try to start the truck, but Marcus, now bearing the drivers clothes and gun, tries to destroy it. The women overpower and tie him up. Craig emerges from the trailer and kills Marcus. The truck starts up again, and Nina tries to back it up. Liz stands at the rear to signal Nina, but eventually leaves to drink more red fluid. Nina, unable to see Liz, exits the cab and sees Craig, who tries to lure her into the rear trailer. Hearing Liz crying for help from inside, she pushes Craig in and locks the door. Eventually, after Nina turns the truck around, she stops and examines the front trailer. To her horror, she discovers it is an abattoir where human bodies, including Marcuss, are ground into the red fluid that fuels the truck. Shocked, she returns to the cab and keeps driving. Nina spots a car and signals them for help. The truck radio turns on again, distracting Nina long enough to allow Craig and Liz break into the cab. As the three fight, Craig rams the truck into the car. Liz is thrown from the cab by Nina, who is then knocked out. When Nina awakens, she finds Craig dragging Lizs body to the trailer. He tries to persuade her to help, rambling of a magnificent opportunity. Nina instead flees, but Craig hits her head on the side of the cab. He drags her into the trailer, but she manages to defend herself and flees into the bush. Craig pursues and catches Nina, but she kills him with the truck drivers gun. As Nina emerges from the bush, she spots the couple from the wrecked car examining the truck. She runs toward them, screaming warnings. The couple, having been run off the road, hearing distant gunshots, and seeing a screaming figure running towards them, commandeer the truck and drive off. Nina watches in horror as the cycle repeats itself.