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.

Beautiful, young hitchhiker Sally (Ely LaMay), attempts to survive the night while making her way back home as a sadistic killer and cannibalistic madman (John Blyth Barrymore) haunts the desert highways, probing for fresh roadkill.