sentences:  The early career of Jerry Lee Lewis, from his rise to rock and roll stardom to his controversial marriage to his 13-year-old cousin that led to his downfall, is depicted in the film.Until the scandal of the marriage depreciated his image, many had thought Lewis would supplant Elvis Presley as the "King of Rock and Roll" in the 1950s.Jerry Lee Lewis (Quaid) plays piano (as opposed to a guitar like most other rock artists) during rock and roll's early years from 1956 to 1958.