It's Southern California in 1959. Chip, a member of the "Jags" gang/car club, plummets to his death while attempting to rape gang floozy Mary Lee Morgan (Elinor Donahue). Fellow member of the Jags Frank (Mel 'The Velvet Fog' Torme), noting from a distance the distinctive head scarf Mary Lee is wearing, mistakenly blames Mary Lee's sister, chronic troublemaker Silver Morgan (Mamie Van Doren) for Chip's death. Meanwhile the sisters and Jimmy are working on Silver's reformation. Silver and Jimmy play a game of "Whose life was more rotten?" and he reduces her to tears by singing.