Behind-the-scenes footage and clips from the film, as well as interview clips of cast and crew members, tell the story of the making of Seabiscuit, a major motion picture released in 2003 from the best-selling novel by Laura Hillenbrand. This documentary explains the transfer of the story from book to screenplay to movie, the use of 10 horses to play Seabiscuit, the problems with filming race horses, costumes, characters and more.