Texas Ranger Tom Hardy is ordered to find Big Wolf, an important Native American leader who has been abducted by outlaw Duke Granby. Tom's assistant, Little Wolf, is wounded and taken to the Reeves ranch, where the ranger meets and falls in love with Marion Reeves. Later, Marion reveals her concern for her brother, Jack, who is involved with the Granby gang. When Tom discovers Jack in a saloon with the criminals, a fight ensues leaving one man dead, and the blame is falsely placed on Jack. He runs to Marion for help, with Tom in pursuit. Marion holds Tom at gunpoint, enabling her brother to escape. Jack takes refuge in Granby's den, unaware that Little Wolf has been following him. The boy takes Tom to the hideout, where the ranger battles Granby. One of the outlaws blows up a dam, causing a flood. After Tom pulls Granby from the water, the outlaw exonerates Jack with his dying breath. The ranger then saves Marion from the flood, permanently winning her love.