This movie is based on the true story of how a small music recording studio, Chess Records, located on the south side of Chicago, began recording blues music with Muddy Waters (Jeffrey Wright) and Little Walter (Columbus Short) in 1947, and eventually gave birth to rock and roll in 1955 with Chuck Berry (Mos Def). Record producer, Leonard Chess (Adrien Brody) has an ear for this different type of music, and believes he can cash in by signing up new talent such as songwriter, Willie Dixon (Cedric the Entertainer), Howlin’ Wolf (Eamonn Walker), and Etta James (Beyonce Knowles). Leonard Chess makes all of his artist part of his family and takes care of them. This is not an easy job for him, because they spend a small fortune on booze, drugs, and the high life. When Chuck Berry goes to jail, Leonard is able to find another talented performer, Etta James, to take his place. In the late sixties, as their music goes out of favor, Leonard Chess gets out of the record business.