In this western, the Three Mesquiteers must find a killer and his band after they murder an official from the State Agricultural Service who had come to investigate an outbreak of hoof and mouth disease. The killer is fearful that the official would quarantine his entire herd. Unfortunately for the foolish rancher, if the herd is not isolated, all of his cows and those of his neighbors will die anyway. The heroes are assisted by Buck the clever Great Dane.
The simple story has the pair coming to the rescue of peace-loving Mormons when land-hungry Major Harriman sends his bullies to harass them into giving up their fertile valley.
Cole Thornton, a gunfighter for hire, joins forces with an old friend, Sheriff J.P. Harrah. Together with a fighter and a gambler, they help a rancher and his family fight a rival rancher that is trying to steal their water.
Sandy Doyle, gambler and political chief of a small border town, seeks to gain control of the Bar-X Ranch, owned by Rufe Rickson, to further some undercover activities of his own.
Banker Mason is after the ranchers land so he can resell it to the railroad for a profit. He has the railroad agent killed and replaces him with his stooge who then offers even less than Mason.
After a payroll robbery the Mesquiteers catch up with the gang. But the members escape, the gang leader is killed, and they end up with only the leaders young son who is quickly sent to a work farm.
Tim Hart (Tim McCoy), a former Texas Ranger, comes out of retirement to avenge the death of Lightnin' Ed (Frank LaRue), his foster father, who had been sent to Rainbow's End, to investigate a series of train robberies.
Popular movie trailers from 1937
These some of the most viewed trailers for movies released in 1937:
The Stooges find a crippled boy and his sister living in their dumpyard shack. To raise money to pay for the little boys operation they buy a phony treasure map from a con man.
A young, newly-appointed rookie state trooper, John Shields, is celebrating with his sister Jane, his younger brother Freddie and Tom Marlin, Jane's fiancé and also a trooper, when they hear over the radio that two bandits have just killed a lawyer and his watchman.
The policy-racket reaches it lean, bony fingers into the ivy-towers of a large university and the underworld trying to “beat the numbers-racket” with applied mathematics.
