The Marshal sends John Weston to a rodeo to see if he can find out who is killing the rodeo riders who are about to win the prize money. Barton has organized the rodeo and plans to leave with all the prize money put up by the townspeople. When it appears that Weston will beat Barton’s rider, he has his men prepare the same fate for him that befell the other riders.
When Sheriff Jake sees a man at the safe and then finds the payroll gone, he trails him. Just as he is about to arrest him, the man saves his life. Still suspicious, he joins up with the man and later they learn that Melgrove, the towns leading citizen, is trying to take over the area’s ranches by having his gang stop all incoming supply wagons. With the ranchers about to sell to Melgrove, the
Flagg is relocating flood victims to Gunsmoke Ranch. The Three Mesquiteers know Flagg to be a crook and try to warn them.
Shirley Martin finds that Weylan has diverted the water from the valley and her cattle are dying. First she and her foreman Bob Lawson go to court. This fails when Weylan’s men keep the ranchers from testifying. But Shirley has a second plan to return water to the valley.
A range lawman (Ken Maynard) unmasks a black-cloaked phantom killer (Sheldon Lewis).
