Canadian lobster fisher Ford Lofton's wife Deborah dies from a fall riding neighbor Blake Raines's horse Twister. Ford's eldest daughter Caroline cares nothing for horses but dates Blake's hot-tempered son, jockey Darrow. Her younger sister Virginia is obsessed with horses, especially Twister's foal Stormy. Seeing how Stormy's sale affects Virginia, Ford first arranges for her to become the new owner's stablehand, then buys it himself. Caroline breaks up with Darrow, and Virginia becomes his bitter race competitor.