This documentary examines the careers of the 1950s-1970s Stax Records and Motown soul and R&B singers who “kept on keeping on” right through (and after) the disco scene into today, through the use of interviews with and performance footage by such Motown luminaries as Isaac Hayes, the Chi-Lites, Sam Moore (of Sam and Dave), Mary Wilson (of the Supremes) and others. The focus of the film is how these performers managed to keep thriving through the 30 years of change in the music industry since the heydays of classic R&B.