A prim and proper schoolgirl goes against her society grandmother's wishes when she dates a motorcycle-riding juvenile delinquent.

'Pleasantly plump' teenager Tracy Turnblad achieves her dream of becoming a regular on the Corny Collins Dance Show. Now a teen hero, she starts using her fame to speak out for the causes she believes in, most of all integration. In doing so, she earns the wrath of the show's former star, Amber Von Tussle, as well as Amber's manipulative, pro-segregation parents. The rivalry comes to a head as Amber and Tracy vie for the title of Miss Auto Show 1963.