In a magical kingdom, the Queen wants to surprise her daughter, Princess Annika, with a birthday gift. When she opens the door to Annika's room, she discovers that Annika is missing, having gone to an ice rink without asking for permission. Out skating, Annika meets a small polar bear whom she names Shiver. When Annika returns to the palace, her parents are so worried and overprotective they forbid her from skating ever again.
Al Jolson plays Gus, a loyal stable boy and jockey to a rich family in the South that has been interested in horse racing and breeding horses for generations. (In a flashback we see Jolson's grandfather, who also worked for the same family back in 1870.) The young heir of the family, Jack, loses a lot of money by gambling and is blackmailed by the crooks he lost to for forging a check. They convince Jack to ask his mother to replace Gus with another jockey for the family's racehorse, "Big Boy", but she refuses. The crooks frame Gus and he is discharged for tampering with the horse. Gus is replaced by a jockey who has been bought off to lose on purpose. Gus find works as a waiter in a fancy restaurant. While working there he uncovers the details about the race throwing plot and he reveals this to Hughes and then, with his help, outsmarts the crooks just in time to then ride "Big Boy" to victory.
The story picks up in 1880s England, when widower Squire Wendon's (Charles Evans) mare Duchess is about to give birth to a foal. He has denied his adolescent daughter Anne (Mona Freeman) to watch, but the girl sneaks into the stables and watches anyway.
As summarized in a film publication, a human love story was added to the horse story, which includes a fox hunt and race. At a house party given by Squire Gordon (Steppling), his daughter Jessie (Paige) and Harry Blomefield (Morrison) are playing games with the children, although they have reached the age where Harry realizes that he loves her. Among the guests is Jack Beckett (Webb), who lives by his wits and has gained entree as a favorite of the haughty Lady Wynsaring (Farrington). Squire Gordon gives Lord Wynwaring (Peacocke) 800 pounds for his wife's charity, which Jack steals from the Wynwaring room. During a fox hunt the next morning, Jessie's brother George (Kenny) is killed in a fall from his horse. Jack puts the stolen money in the pocket of the dead man and tells Jessie that her brother was a thief. To prevent him from telling her mother, Jessie agrees to marry Jack when she comes of age. Jessie meanwhile realizes that she loves Harry, who cannot understand her wish to marry Jack. Several years pass and Harry tries to elope with Jessie, but is foiled. After a race sequence, Black Beauty carries Harry to victory and to Jessie, foiling the plans of the villain Jack.
Buck explores the life of Buck Brannaman from his childhood living with an abusive father to his successful approach to handling and training horses. Brannaman worked on the Robert Redford film The Horse Whisperer as the lead equine consultant. He teaches people to communicate with their horses through leadership and sensitivity, not punishment.
Down on his luck Louisiana horse trainer Lloyd Bourdelle (Walter Matthau) dreams of winning the All American Futurity at Ruidoso Downs in New Mexico. Lloyd has three sons, Buddy, Randy and Casey. Buddy (Andrew Rubin) helps his father train horses, while Randy (Steve Burns) rides them in races. Lloyd takes Casey (Michael Hershewe) and Randy to a small bush track, to try to make some money by racing Casey's small pony, Gypsy. They find a match race with Mr Marsh (Robert Webber) and his daughter Kelly (Susan Myers), but play a trick on Marsh by tying a live chicken to Gypsy's saddle. Gypsy wins the race, but Marsh doesn't pay up, complaining that Lloyd cheated him by not having a rider on Gypsy. Lloyd laughs and remarks that the chicken is the best live jockey around. The races end and Lloyd takes Randy and Casey home.
Umberto Solaro, a young cavalry officer, falls in love with a Piedmont Count's daughter. They develop a romantic attachment, but she marries an Austrian baron under family pressure. After his horse dies in an accident during a completion, Solaro transfers into the newly formed Italian Air Force. He falls heroically in combat during the First World War.
When a prominent racehorse owner winds up dead-allegedly kicked to death by his prized stallion, Charlie Chan is called in to investigate. But when the indomitable detective discovers evidence of foul play, he's soon hot on the hooves of an international gambling ring with an evil plot to turn the racetracks of the world into a trifecta of terror!
In 1912, a teenage boy named Albert Narracott (Jeremy Irvine) from Devon, England, witnesses the birth of a Bay Thoroughbred foal and subsequently watches with admiration the growth of the young horse. Much to the dismay of his mother Rose (Emily Watson), his father Ted (Peter Mullan) buys the colt at auction, despite their needing a more suitable plough horse for the farm work. Albert's best friend, Andrew Easton (Matt Milne), watches as Albert teaches his colt many things, such as to come when he imitates the call of an owl by blowing through his cupped hands.
Chino Valdez (Bronson) is a lonely horse breeder, whose life is thrown into turmoil when a young runaway (Van Patten) turns up at his door looking for work and, later, he falls in love with a beautiful woman (Ireland) whose brother (Bozzuffi) hates him.
This farce stars comedian George Formby, who plays George, a stable boy. He also has the unique ability to soothe an anxious racing horse. Expectedly, George races the horse and wins.