The story of X begins with the earliest days of adult film when men peddled stag reels and projectors out of the trunks of their cars. Meet the men behind the camera, such as "King of Sexploitation" Dave Friedman and the preeminent breast man Russ Meyer. Considered pariahs back then, they're now hailed as pioneers in the fight against censorship. "The Story of X" visits the 60's when women's rights, not nudity, became the issue and recounts porn's arrival in Hollywood, led by director Bernardo Bertolucci's "Last Tango in Paris." In the 70s, several groundbreaking films including "Behind the Green Door," featuring Marilyn Chambers, and "Deep Throat," featuring Linda Lovelace took the genre to a new level. With the advent of home video in the 80s, adult entertainment became the billion dollar business it is today.