The trailblazers and contemporary purveyors of freestyle rap rub elbows in this one-hour documentary chronicling the genre's genesis, taboos, societal influence and future. Recorded in Los Angeles, San Francisco and the Big Apple, the film rotates between off-the-cuff vocal performances and commentary from hip-hop mainstays such as Mos Def, Supernatural and the Last Poets. Featured artists include Lord Finesse, Craig G, Jurassic 5 and more.