The Duke in his waning years stars as a busy US marshal who encounters trouble with his own young sons, Grimes and O'Brien, when they participate in a bank robbery led by the villainous Kennedy. The boys aren't really bad, and the motivation for their participation in the robbery is
neglect by their lawman father. Wayne sees the error of his child-rearing ways, makes his peace with his sons, and catches Kennedy to boot. The moral message gets a bit too preachy at times, and the performances are somewhat wooden. The final shootout is pretty bloody.