Luke Fisher, a rascally sheriff, and Brad Foster, his deputy, are in reality cattle rustlers. To protect themselves, they endeavor to fasten the guilt on Tom Snow, foreman of the Three "A" ranch. When they come to arrest Tom, he drives them off at the muzzle of a gun and makes his escape. After a daring ride horse and rider dash across a narrow foot-log which bridges a chasm. Should the horse make a misstep, the rider would have been plunged to a horrible death on the rocks hundreds of feet below. West, proprietor of the Haven Delight saloon, has adopted a pretty girl, whom he calls Sunshine. Craig Keyes, a gambler at the Haven Delight saloon, resolves to marry the girl, but when she refuses him, he endeavors to overpower her. Finally, after a sensational struggle, she escapes into a driving storm. As Sunshine wanders in the rain, she encounters Tom Snow. He cares for her and thus it is that the two come to love each other. The sheriff and his deputy, fearful of detection, Ieave the country, and Tom is again free. Then it is that be marries Sunshine. After the wedding, by means of old tin-types, the two are led to believe that they are brother and sister. As they sit horror-stricken. Martha, the housekeeper, who has seen the tin-types, tells them that their belief is a wrong one. Martha tells them that twenty years ago while she was a nurse in a hospital, she changed the real infant brother and sister, and that Sunshine is in reality the sister of Craig Keyes and that she, Martha, is Tom's mother. In the meantime, Craig Keyes, the gambler, has followed Sunshine to her home, and outside he overhears Martha's story. Conscience-stricken, he resolves to renounce all relationships, and leave the country.