11 year old Davy discovers that a chained gentle dog, Buck, is badly wounded around the neck because of the thick, tight collar he is made to constantly wear by his unfeeling owner. When Buck comes through the fence and becomes stuck, Davy removes the collar. Even though the boy tells him to stay in his owner's yard, the dog follows him home.

A feud develops between the settlers and the railroad detectives in Red Rock Valley. Clem Barstow sends for Billy the Kid and Fuzzy Jones to help.

Dorn is after the rancher's land and is trying to stop Banker Brady from helping them. When his man Hammond kills Brady, there is a run on the bank. When Rocky volunteers to ride to the next town for money, he is ambushed by Dorn's men, loses his memory, and is jailed for supposedly stealing the money.

Billy the Kid is framed for murder.

Two deputies go undercover to save a scientist from his evil kidnappers.

When Sheriff Hanley sends for Billy and his pals, they arrive to find him murdered and Ed Slade temporary Sheriff.