Jim owns a wild stallion called Fury that none of his ranch hands can tame - except young orphan Joey. When the stallion is injured by one of the ranchers, Joey runs away to help the wounded steed. Jim and his friend Helen find him in the nick of time, saving Fury's life. Jim adopts Joey as his son, and so begins a lifetime of adventure for Fury at the Broken Wheel Ranch.

When Fury is smitten by a white mare, young Joey's jealousy gets the better of him, and he lets the horses escape into the wild! With Helen's help, Joey brings them back!

A stranger arrives claiming to be Joey's real father, threatening to separate the boy from Fury. Jim must act quickly to stop the impostor.

After a rabid dog bites Joey in the schoolyard, Jim and Fury must race against time to get him treated.