The untold story of the world's longest running video show, Video Music Box. A hip hop mainstay since 1983, VMB gave a platform to artists like Jay-Z, Nas and Mary J. Blige before they hit it big. Host Ralph McDaniels' archives - amassed over 40 nearly years - reveal the show's importance to numerous big-name musicians, as well as to the kids that grew up watching.—SHOWTIME