In the Underworld known as Felicidad, people and monsters live in harmony. Here, farmers who raise and command monsters are known as Farmagia. Thanks to the Farmagia, the Magus Diluculum, and the Magus's generals known as the Oración Seis, the society of Felicidad has prospered... until the fateful day the Magus dies. That's when Glaza, one of the Oración generals, takes the opportunity to seize power for himself.