The listing, Intensity has ended.
Chyna Shepard is a college student visiting the family of her friend, Laura Templeton, for a long weekend. The victim of a violent, unstable and abusive childhood, Chyna finds the Templeton house provides something she has yearned: acceptance. This is dispelled when Edgler Vess, a serial killer, breaks into the house in the night and methodically kills all of the occupants except Laura and Chyna.
Chyna hides under her bed from him and waits until he goes downstairs. She searches the house and finds Laura's father shot and tied to a toilet seat, and the mother stabbed to death in the shower. Chyna encounters Vess on the stairs eating a spider before she sneaks into Laura's room. She finds Laura tied up and raped. Chyna sneaks away, promising to return. Before she can intervene, Vess kills Laura and takes her to his motor home. Chyna hears Laura screaming and runs upstairs intending to attack Vess with a knife. Unaware Laura is dead, Chyna sneaks aboard the motor home and finds her friend's corpse. Before she can escape, Vess drives away. Chyna hides in a back room, planning to escape at the earliest opportunity. When he stops at a gas station, she sneaks out of the motor home, and heads inside the gas station to find a phone. Chyna surreptitiously watches Vess boast to the gas station clerks that he is holding a young girl, Ariel, prisoner in his basement, before he kills them and drives away. Chyna feels compelled to follow Vess and help free the girl. She takes an attendant's car, and follows Vess. Chyna crashes her car into the Vess motor home. While Vess gets out to investigate, Chyna sneaks onboard the motor home.