The Ridin' Comet.

Slim Ranthers objects to the development of an irrigation project on his ranch and incurs the enmity of those involved in it. Max Underly, Slim's rival for the affections of Bess Livingston, has Slim unjustly accused of cattle rustling. Since the accusation does not deter Slim, Max and his men ambush him at night, wounding him in the arm. Slim eventually defeats Max and wins the affections of Bess.