Hardcore
(1979)
Jake Van Dorn is businessman from American heartland who shares strong Calvinist convictions with most of his countrymen. His teenage daughter is missing from the trip in L.A. and Van Dorn hires private investigator. Result of the investigation is his daughter being spotted in cheap X-rated movie. Van Dorn decides to bring her back personally and during the quest he becomes familiar with the pornographic underworld.