On August 19th, 1973, the people of Newt, Texas, led by Mayor Burt Hartman (Paul Rae), burn down the farmhouse of the Sawyer family for their role in aiding Jedidiah "Jed" Sawyer, also known as "Leatherface", in several murders. The arsonists are celebrated as heroes in the town, and the entire family is presumed dead. However, an infant, Edith Sawyer, is found by one of the townsmen, Gavin Miller (David Born) who promptly murders her mother, Loretta Sawyer (Dodie Brown), and adopts Edith with his wife, Arlene (Sue Rock).
23 years later in 2012, Edith has been raised by her abusive parents, Gavin (David Born) and Arlene as Heather Miller (Alexandra Daddario). One day, a lawyer, Farnsworth (Richard Riehle), informs her that her long lost grandmother, Verna Carson (Marilyn Burns), has left her an inheritance, and Heather learns of her adoption. Angered, she sets out on a trip through Texas with her boyfriend Ryan (Tremaine Neverson) and two other friends, Nikki (Tania Raymonde) and Kenny (Keram Malicki-Sánchez), with little regard to her mother's warning. They also pick up hitchhiker Darryl (Shaun Sipos).
When they arrive, Farnsworth gives her the keys to the house along with a letter from Verna. Excited about the property she now owns, Heather and her friends look through the house, decide to stay the night, and immediately set off to buy supplies and food, trusting Darryl to stay and look over the house. Darryl begins looting it and believes he will find valuables in a locked room in the cellar of the house; however, upon entering the locked room he is bludgeoned by Leatherface. Heather and her friends return and discover the house has been ransacked, but choose to let it go.
As Kenny prepares dinner, he finds the butler's cellar, where Darryl was killed, and Leatherface impales him. Nikki seduces Ryan into a barn, where they have sex. Heather finds a deceased body upstairs and while trying to find her friends. In the kitchen she finds Leatherface cooking part of a human body; she is knocked out by Leatherface. Waking up in Leatherface's room, she witnesses him saw through Kenny's body, and manages to escape to the graveyard. Hearing the screams and chainsaw, Ryan and Nikki shout and draw the attention of Leatherface, while Heather gets the minivan and frantically picks up her friends.
In the ensuing chase, Leatherface catches up with the minivan and slashes one of it's tires. As the three try to escape, the minivan crashes and flips over, killing Ryan. Heather escapes and makes her way into the carnival where Leatherface follows, but escapes. Heather is taken in by the police, one of whom, Sheriff Hooper (Thom Barry), suspects Leatherface survived the fire and is still alive. Heather looks through the official police records and learns about her family's and the town's histories. She finds the public information which declares the townsfolk who murdered the Sawyer family heroes and also finds the classified report from Sheriff Hooper, which details that the townsfolk were the assaulters. Hartman sends a police officer, Officer Marvin (James MacDonald) to the Sawyer farm to kill Leatherface. However, Officer Marvin is startled and accidentally kills Nikki, before being killed by Leatherface.
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