McKenzie
In his first starring Western for RKO, young Tim Holt must not only carry on his father's freight business but also hunt down his murderer. A certain Matt Gardner wants to corner the freight business to Pecos and persuades young Zack Sibley's wagon master to switch sides. Zack also earns the enmity of Gardner's son Coe, who takes umbrage to the youngster's flirtation with pretty Helen Lee. It all comes to a head during a food shortage in Pecos, a near-disaster that persuades the wagon master to switch sides once again. When the dust settles, Zack learns that old man Gardner is actually Carl Anderson, the man who murdered his father.
Lathrop
A group of American adventurers discover a bed of black pearls off a South Pacific island. When one of them is shot dead, a young girl in the group is accused of the crime.
Rusty
In an effort to get Jim Martin to sell his ranch, the Halsey brothers have kidnapped his son Tom. When Bob Burke goes after him alone, he gets help from the gang known as the Riders of the Sage.
Cookie, Singing Cowhand
It's time for the big rodeo and it's Bob of the Allen ranch against Luke Williams of the Barns ranch. With Bob leading after the first day, Sands and Trigger kidnap him to keep him from winning.
Cookie
Trailing the men that murdered his father, Bob Archer finds a man in a gunfight. He helps him to escape only to be knocked out by him and captured by the Sheriff.
