The Texas Chain Saw Massacre

The Texas Chain Saw Massacre is the first film in the Texas Chainsaw series to be part of the Horror Movie Universe. It is also the first film to be released.

Plot
Sally Hardesty and her paraplegic brother, Franklin, travel with three friends, Jerry, Kirk, and Pam, to visit the grave of the Hardestys' grandfather to investigate reports of vandalism and grave robbing. Afterwards they decide to visit the old Hardesty family homestead. Along the way they pick up a hitchhiker who talks about his family who worked at the old slaughterhouse. He takes a Polaroid picture and demands money for it. When they refuse to pay, he burns the photo and slashes himself and Franklin with a straight razor. The group forces him out of the van and drive on. They stop at a gas station to refuel, but the proprietor tells them that the pumps are empty.

They continue towards the homestead, intending to return to the gas station once it has received a fuel delivery. When they arrive, Franklin tells Kirk and Pam about a local swimming-hole and the couple head off to find it. They find the swimming-hole dried up but hear a generator running in the distance. They stumble upon a nearby house. Kirk calls out, asking for gas, while Pam waits on a swing in the yard. After Kirk receives no answer, he enters through the unlocked door, whereupon Leatherface appears and kills him. Pam enters soon after and trips into a room filled with furniture made from human bones. She attempts to flee, but Leatherface catches her and impales her on a meathook then prepares to butcher Kirk. Jerry heads out to look for Pam and Kirk at sunset. He finds the couple's blanket outside the nearby house. He investigates and finds Pam, still alive, inside a freezer. Before he can react, Leatherface kills him and stuffs Pam back into the freezer.

With darkness falling, Sally and Franklin set out to find their friends. As they near the neighboring house and call out, Leatherface lunges from the darkness and kills Franklin with a chainsaw. Sally runs toward the house and finds the desiccated remains of an elderly couple in an upstairs room. She escapes from Leatherface by jumping through a second-floor window and flees to the gas station. Leatherface disappears into the night. The proprietor calms her with offers of help, but then ties her up and forces her into his truck. He drives to the house, arriving at the same time as the hitchhiker, now revealed as Leatherface's brother. When the pair bring Sally inside, the hitchhiker recognizes her and taunts her. The men torment the bound and gagged Sally while Leatherface, now dressed as a woman, serves dinner. Leatherface and the hitchhiker bring an old man, "Grandpa" (John Dugan), from upstairs to share the meal. During the night they decide that "Grandpa" (the best killer in the old slaughterhouse) should kill Sally. He tries to hit her with a hammer, but is too weak. In the ensuing confusion, she breaks free, leaps through a window, and escapes to the road. Leatherface and the hitchhiker give chase, but the latter is run down and killed by a passing semi-trailer truck. Armed with his chainsaw, Leatherface attacks the truck when the driver stops to help. The driver hits him in the face with a large wrench. Sally escapes in the back of a passing pickup truck as Leatherface waves the chainsaw above his head in frustration.