Johnny Casar runs away from the orphanage to start a successful career as a roller skater and after setbacks learns to curb his ruthlessness and ambition.
Mickey Rooney
as Johnny Casar
Pat O’Brien
as Father O'Hara
Beverly Tyler
as Mary Reeves
James Brown
as Allen
Ralph Dumke
as Bruno Crystal
Milburn Stone
as Jeff Davis
Bert Begley
as Shilling
Marilyn Monroe
as Polly
Sam Flint
as Dr. Barton
Glenn Corbett
as Mack Miller
John Hedloe
as Ullman
James Anderson
as Strong Arm Man (uncredited)
