Mark and Susan have owned the ranch for several years, they inherited it and the business is still going as well as before. The heroes of Ranch Mystery specialize in raising and training racehorses, and this work is not easy and requires special skills. Horses are sensitive and subtle animals, they are influenced by the external environment, and if it is negative, the animals are worried, which is what has been happening lately. The owners cannot understand the reason for this and assume that someone visits the ranch at night, scaring their horses. They decided to ambush and cover these intruders, and you will help the heroes carry out their plan in Ranch Mystery.