A unclad young woman lying in bed with a twinkle in her eye tells us about a recent discovery. In a long flashback, she visits her fiance's empty apartment on their wedding eve, discovering a porno video. She's angry, then hurt, then confused: she decides to find out why men watch porn. She asks a series of odd men. An on-call gigolo (dressed as a doctor) and a man who's her best friend join her on the couch to coach her in this search for the purpose of porn. Via TV, they get help from philosopher Stephen King. When discovery comes, will she find desire, loneliness, or fantasy at porn's core?