A group of young thugs rides into the town of Dawson and take it over. When the cowardly sheriff is unable to restore control, the parents of the leader must take action. The leader's father is an infamous ex-gunfighter, and he straps his guns on one more time.

A dissatisfied ranch hand becomes a bounty hunter. He conspires with a crooked town boss to dirty up a neighboring village where a valuable railroad franchise is headed.

The townsfolk are set on lynching an accused killer held in the town lockup. But US Marshal Johnny Reno stands in their way.