"National Velvet" is the story of a 12-year-old, horse-crazy girl, Velvet Brown, who lives in the small town of Sewels in Sussex, England. She wins a spirited gelding in a raffle and decides to train him for the Grand National steeplechase. Velvet is aided by a penniless young drifter named Mi Taylor, who discovered Mrs. Brown's name and address among his late father's effects, though he is unaware of why it was there. Hoping to profit from the association, Mi accepts an invitation to dinner and a night's lodging at the Browns' home, but Mrs. Brown is unwilling to allow Mi to trade on his father's good name and remains vague about their connection. Nevertheless, she convinces her husband to hire Mi over his better judgment, and Mi is brought into the home as a hired hand. It is revealed that Mi's career as a jockey ended in a collision which resulted in another jockey's death. Mi has not held a job since, and now hates horses.