The world has fallen into crisis. All the lands have sunk, a deadly infection is spreading through the population, and no one can produce enough food for humanity to survive. The only hope lies in Metafalcia, a green utopia which can only be raised through Song Magic. However, the Goddess in charge of Song Magic will not allow humanity to realize their dream of a perfect world. The leader of the world creates a government against the Goddess, and is wildly backed by the people. Explore a vast and deep world as Croix, a soldier from the exclusive main city, and help to save the world and find the utopia of Metafalcia!