Watch Gunfight at Dry River for Free: How to Stream the Movie Online at 123Movies. . The closing years of the nineteenth century Old West. Dry River tells the story of a Mexican border town ravaged by severe drought, with the only water source controlled by a family of American renegades on the trail for a legend of lost gold. When a Mexican stranger arrives to reclaim his father’s land, a violent confrontation will cause the lives of all to be forever transformed.