A history of the pornography industry as it developed in New York City.

Armand Weston interviews real people who advertise in the personals column of adult publications. Each interview is followed by a hardcore re-enactment of the scene.

A financial advisor is torn between his female client and his young daughter's female best friend. Meanwhile, his other female client seduces both his daughter and her girlfriend.

A filmmaker hosts a series of segments while urging the audience to "judge for yourself what should be labeled obscene." Assorted "case studies" depicting various forms of sexual activity are presented.

Documentaries were the first types of films to break through the hardcore feature barrier in 1969. SEX U.S.A. highlights the frank, open, and revolutionary sexual attitudes of the time.

Two college buddies, womanizing Ned, the host of a hit TV show called "Man of the World", and John, a family man and accounting exec at an ad company, meet for the first time in years and compare their lives.