While Jim Coates is off on a cattle thrust, his married woman, Katie, and son, Travis and Arliss, are leave behind on their Lone-Star State spread. When a runaway dog name Old roarer cause harm in one of their W. C. Fields, Travis try to drive him off. nevertheless, Travis and Katie both warm to Old roarer when he salvage Arliss from a bear onslaught. As Travis and the brave and faithful dog grow closer, concern grows about an eruption of hydrophobia.