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.

A wild stallion is menacing all of the local ranches and freeing their horses. Neighbouring rancher Charlie Stevens thinks that Fury is to blame, but Joey has seen the white renegade stallion and must find it, because Charlie wants Fury dead for something he had no part in.

Jim has to sell some horses or lose the ranch. Pigott, the horse coper (dealer) offers to buy Fury but Jim says he is nor for sale. Later, when Joey wants to show Pigott the tricks that Fury can do, Pigott tricks Joey into being on free government land. Pigott then claims Fury and tries to get away.

Joey gets a rifle and goes hunting with Pete. What they find is trouble in the form of an escaped criminal.

There is a drought. Joey becomes a junior Ranger and tries to protect a couple of hunters from starting a forest fire.

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!

Local ranchers think that gypsies are stealing horses. Then Fury is rustled which leads to the truth.

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.