"Buddy" Farral, the son of a ranchman, is left in charge of his little sister when his parents go to town for supplies. The cigarette stub of a careless cowboy starts a prairie fire that mows down everything in its path. The boy gallops to the ranch house, finds his sister asleep, awakens her, lowers her into the well, and then slides down the rope to safety. How they are discovered and restored to their agonized parents is a most effective play in pictorial sensations.