It is the 16th century. King Charles V has asked his noblemen to assist him in his campaigns throughout Europe by providing horses, and the noblemen are doing their best satisfy his needs. But in the midst of the Renaissance, it is not only war that is important, but art too, and the horse is starting to be seen as an artistic object and a distinguished, prestigious resource.

It is into this setting that Yago is born, a special, different child, who will show all those around him that he posseses the ability to extract the beauty enclosed in the horses' bodies and their movements. Yago is the key to creating a special breed of horses of rare elegance. Yago and the characters around him manage to expose a plot to illegally traffick horses and other products that, due to a decree announced by Charles V, cannot leave the country.