Decades after the infamous massacre that wiped out part of the Sawyer family, a young woman named Heather discovers she has inherited a Texas estate from a grandmother she never knew she had. Unaware of her connection to the notorious family, Heather, along with her friends Ryan, Nikki, and her boyfriend Kenny, embark on a road trip to investigate her newfound inheritance. Upon arrival, they are greeted by the estate's lawyer, Farnsworth, who gives Heather the keys and paperwork, along with a letter from her grandmother urging her to read it, which she disregards.

As Heather explores the sprawling Victorian mansion, her friends enjoy the amenities, unaware of the dark secret it harbors beneath. Locked in the basement, lies a familiar figure of terror, bound by family ties to Heather. Without realizing the grave danger, the friends inadvertently release the lurking menace, setting off a chain of gruesome events. As the locals, including the town's ominous mayor and a handsome young deputy, become involved, Heather must confront the shocking truth of her heritage.