It was the 1970s in the South Bronx when a handful of innovative DJs and fast-rhyming MCs laid down the sound for a dance revolution. These B-boys -- also known as "breakboys" or "breakdancers" -- helped pioneer hip-hop culture, and their stories are told in this lively documentary. The film gathers archival footage from the '70s through the new millennium, as well as interviews with celebs KRS-One, Redman, Mos Def and many others.