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The Greek Chorus, who appears nude except for long black boots, opens the film and appears between scenes throughout the film to provide narration, plot details, and updates.

A man named Adolf Schwartz, Adolf Hitler in hiding, is living in a Bavarian-style castle in northern California. After an orgy in the dungeon with three women (The Headsperson, The Ethiopian Chef, Limehouse) and a man (Paul), he is murdered when someone places a ravenous piranha fish in his bathtub.

Some time later, Margo Winchester hitchhikes to the nearby town of Miranda and is spotted by local Sheriff Homer Johnson. Homer tries to make advances, but Margo rejects him flirtatiously. After that, she is picked up by Leonard Box, a known troublemaker and son of a sawmill owner. An argument breaks out between the two, and Leonard subdues and rapes an unconscious Margo, who regains consciousness and kills him in retaliation. Homer witnesses this, but covers up the incident because Leonard's loaded father could put Margo in jail forever, and so Homer uses the incident to his leverage. Margo sleeps with him, starting a relationship that would turn out to be mutually unfaithful.

Homer helps Margo get a job at the local diner, Alice's. It is owned by Alice who is married to Paul, who was sexually servicing Schwartz. Alice also likes women, depicted earlier in the movie. Paul is similarly unfaithful: he was interested in Limehouse, and after Margo finishes work and goes for a swim at the Salmon Creek, he comes after her. While Margo undresses besides the stream, Paul does the same before approaching her, and they have sex. Homer, who had stopped a woman earlier for a traffic violation and let her go after a blowjob, is in bed with a Native American woman named Pocohontas and shoves her out of the house when he hears Margo's van approaching, after she and Paul finished their date. Still nude, she enters the house, seemingly ready for a second round with Homer, who's under the shower to clean himself up. He scalds himself with hot water by accident. Margo comments on his red penis that he must have made it with an Indian!

Margo later performs a strip show at a bar, which triggers the reaction of lumberjack Rafe, who rapes her. The other guests join in, and they flee when Homer arrives on the scene. Rafe and Homer fight, and both men end up killing each other.

Margo stops by a phone booth, revealing that she is an undercover cop sent to investigate the crime. She takes a shower, during which she is suddenly attacked by figure in black. After running into the forest, it is revealed that her attacker is Alice. Alice reveals that she is Adolf's murderer and also his daughter. She murdered Adolf out of jealousy that he was sleeping with Paul, and plans to do the same to Margo. After fighting in the creek, Alice and Margo reconcile, and Alice leads Margo to a bed frame in the middle of the forest. Suddenly, Paul appears and shoots Alice out of revenge for Adolf, whom he loved. Margo disarms Paul and apprehends the two.

Alice, revealed as the murderer out of jealousy over Schwartz (her father) and her husband, is exposed, and Margo is unmasked as an undercover cop investigating the crime.

The climax wraps up the film’s convoluted web of sexual intrigue, murder, and mistaken identities by exposing both the killer’s motive—rooted in bizarre family and sexual entanglements—and Margo’s true purpose. The film lands as a parody of both murder mysteries and Meyer's own sexploitation oeuvre, using its big reveals to satirize the genre’s obsession with twisted motives and shocking unmaskings.