Dog owner James Haggin (Walter Pidgeon) buys "Big Red," an Irish setter, for a large sum in hopes of making him a champion show dog. However, Big Red is unruly and does not take to being handled. At this point, Haggin meets Rene (Gilles Payant), an orphan boy who needs work, and makes him Big Red's trainer. The two get along so well that Haggin fears the dog will not listen to anyone else. He tries to separate them, but the bond between Rene and Big Red has become too strong.