Twelve-year-old Annyrose, left behind when her brother joins the Gold Rush, escapes the unscrupulous woman with whom she is staying and sets out on a grand adventure with the notorious bandit Joaquin Murieta and his band of outlaws.
When a great drought on the prairie causes cows to give powdered milk and mosquitoes to grow almost as large as small cowsheds, McBroom comes up with a novel idea for producing rain.
