Two treasure/bounty hunters learn one of their prisoners knows about buried treasure in the desert outside Yuma, AZ. Corrupt jailers, bandits and denizens of a traveling medicine show also know. There is lots of double crossing and action as this situation sorts itself out. Imaginative action scenes atypical of Westerns: e.g., shootout on a burning stern wheeler on the Colorado River. A bit of mystery, too: whether or not this alleged treasure really exists.