Hardcore (1979)

In the heartland of North America, Jake Van Dorn, a staunch and religious businessman, embarks on a personal odyssey when his daughter mysteriously disappears during a church trip to California. Hiring a private investigator unveils a shocking revelation—his daughter is entangled in the world of porno movies. Fueled by a simmering rage, he decides to retrieve her himself, thrusting him into the gritty underbelly of the pornographic underworld, echoing a transformative narrative directed by Paul Schrader, known for his screenplay work on Martin Scorsese's Taxi Driver (1976).