Horse trainer Shawn O'Hara and his lovely niece, Margaret, come to America to escape the memory of an accident involving Margaret's brother, Danny. Working with thoroughbreds in Kentucky, Shawn takes a liking to a yearling named Seabiscuit, and fights to convince the horse's owner that the tiny horse with big knees will become a top-notch racehorse. Meanwhile, Margaret begins a tentative relationship with jockey Ted Knowles, but is haunted by her brother's death in a steeplechase spill. Written by Ray Hamel
Shirley Temple
as Margaret O'Hara / Knowles
Barry Fitzgerald
as Shawn O'Hara
Lon McCallister
as Ted Knowles
Rosemary DeCamp
as Mrs. Charles S. Howard
Donald MacBride
as George Carson
Pierre Watkin
as Charles S. Howard
William Forrest
as Thomas Milford
Hal J. Moore
as Race Commentator
Clem McCarthy
as Race Commentator
Sugarfoot Anderson
as Walkin' Murphy, Milford's Boy
Seabiscuit
as Himself (archive footage)
Sea Sovereign
as Seabiscuit (close-ups)
