In the Underworld of Felicidad, farmers capable of growing monsters from seeds and befriending them are known as Farmagia. Avrion, one of the world's five continents, is home to the spirited Farmagia Ten and his companions: Chica, Arche, Leii, and a fairy named Lookie-Loo. They live peacefully, tending their fields alongside their monsters. All of this changes with the unexpected death of the Magus, the ruler of Felicidad. Oración Seis, the six generals who serve the ruler directly, select one of their own, Glaza, to become the new Magus. However, Glaza intends to discard those without power and elevate only the talented. Worse still, his forces attack Avrion to isolate it from the rest of the world. With the aid of their allies, Ten and his friends resist the invasion. The group, each accompanied by their own creatures, must now rise up and fight to save Felicidad from impending doom.