The Adventures of Rin Tin Tin

After all the Indian tribes in the Fort Apache area sign a peace treaty, the War Department orders the fort closed. All the men leave on furlough while waiting for reassignment. Then the Comanche Chief, Okoma, takes over the fort and joins forces with Chief Black Cloud to raid the surrounding territory. Major Swenson is ordered to retake Fort Apache.

Marshal Higgins and his deputy, Kid Hooker, start courting a charming widow. Hooker, who was once a desperado, decides to surrender his badge and return to a life of crime when he fears Higgins may marry the lady.

After Sgt. Powers has deserted to prevent his children from going to an orphanage, Masters is ordered to deliver him to a court martial detail and then finds a suitable orphanage for the children.

Rusty befriends Grey Fox, a Navajo who refuses to leave his peoples tribal ground.

General Tyne-Fyffe from India arrives at Fort Apache. Cpl. Rusty plans on capturing the blustery general's attention.

Sergeant O'Hara takes Rinty and Rusty with him on a gold-mining expedition to an abandoned gold mine. There they run into three desperadoes who have just robbed a bank.

Rusty and Rinty accompany a detail on a trip into town. Rip discovers Abel; the former town sheriff is concerned when his gun slinging son, Toby arrives. Rusty bumps into Toby at the stables and is immediately impressed with his guns. Toby mounts up but Rinty attracts his attention to a broken saddle strap. While waiting for the saddle to be repaired Toby goes to a local saloon and immediately attracts a large crowd.

Rusty, Rinty and Rip help Army major realize it was not his negligence which was responsible for massacre.