A crisis looms over Felicidad, a peaceful underworld where monsters are nurtured from seeds, harvested, and coexist with its inhabitants. How will the children stand up against this powerful enemy? A rebellion fantasy woven with friends and Seeds (Monsters) begins now.

The underworld of Felicidad—
In this place, human-like people as denizens lived in harmony with monsters.

Ten, a boy living on the continent of Avrion, one of the five continents, was also one of them. He is a 'Farmagia,' who nurtures monsters from seeds, harvests them, and uses them in battle. To become one of the Oración Seis, rulers of the continents, he has been cultivating the strongest monster seeds.

Then one day, the sudden death of the 'Magus Diluculum' changed the world drastically.
In the brief moment of people's sorrow, Glaza, one of the Oración Seis who took control of Felicidad as the new Magus, begins his reign.

To protect the ones he loves, and to become the strongest Farmagia,

Ten, along with his fellow Farmagia and monsters, rises up against the Oración Seis!

[Source: official English website]