The Insane (2006)

A young woman learns that she has inherited a Texas estate from her deceased grandmother. After embarking on a road trip with friends to uncover her roots, she finds she is the sole owner of a lavish, isolated Victorian mansion. But her newfound wealth comes at a price as she stumbles upon a horror that awaits her in the mansion’s dank cellars.

When Sally hears that her grandfather's grave may have been vandalized, she and her paraplegic brother, Franklin, set out with their friends to investigate. After a detour to their family's old farmhouse, they discover a group of crazed, murderous outcasts living next door. As the group is attacked one by one by the chainsaw-wielding Leatherface, who wears a mask of human skin, the survivors must do everything they can to escape.

Chrissie and her friends set out on a road trip for a final fling before one is shipped off to Vietnam. Along the way, bikers harass the foursome and cause an accident that throws Chrissie from the vehicle. The lawman who arrives on the scene kills one of the bikers and brings Chrissie's friends to the Hewitt homestead, where young Leatherface is learning the tools of terror.

When a helpful family invites two lost couples in for a good ol' down-home massacre, the prom night teens find themselves all dressed up... with no place to escape.