While taking a shower, Kate Miller, a middle-aged, sexually frustrated New York City housewife, has a rape fantasy while her husband stands at the sink shaving. Later that day, after complaining to her psychiatrist Dr. Robert Elliott about her husband's pathetic performance in bed, she meets a strange man at a museum and returns to his apartment where they continue an adulterous encounter that began in the taxicab. Before she leaves his apartment, she finds papers which certify that the man has a venereal disease. Panicked, Kate rushes into the elevator, but has to return to his apartment when she realizes she's forgotten her wedding ring. When the elevator doors open, she's brutally slashed to death by a tall blonde woman wearing dark sunglasses. Liz Blake, a high-class call girl, is the only witness to the murder and she becomes the prime suspect and the murderess's next target. Liz is rescued from being killed by Kate's son Peter, who enlists the help of Liz to catch his mother's ...

Six friends take a road trip to Galveston in an RV for the wedding of their friend, Kelly. The driver, Johnny, gets lost and they arrive in the small town of Lovelock and his friends Sara, Kate, Melody, Christian, and David, decide to spend the night in the Bed and Breakfast owned by the creepy Mr. Robert Wise. David has an argument with the chef of the inn, Henri, and when the chef is found dead and Mr. Wise has a heart attack in the middle of the night, the local Sheriff suspects the group of travelers and tells his Deputy, Enus to seize the keys to their RV and stay in Lovelock for the duration of the investigation. Then the Sheriff arrests "The Mysterious Drifter" who soon becomes his prime suspect. When the clumsy Johnny accidentally breaks an ancient exotic wooden box belonging to Mr. Wise, he releases the terrible, monstrous "Kuman Thong" and the evil spirit held inside escapes and possesses all the local town folk...