Roller derby was just getting started in the late 1940s, and Hollywood was quick to jump on the bandwagon. Johnny Casar (Mickey Rooney) escapes from an orphanage run by Father O'Hara (you guessed it, Pat O'Brien) and meets Mary Reeves (Beverly Tyler), a skater who helps him land a spot on
a roller derby team. Johnny soon becomes a crowd favorite, attracting the attention of Polly (Marilyn Monroe), a sexy star chaser, but as his ego and selfishness grow, he alienates his teammates. Predictably, character-building tragedy strikes when Johnny is knocked for a loop by polio, but Mary
nurses him back to health and he returns to the track a new, considerably more generou...