The sinking of the ancient continent forced humans to come to the place where the world's giant turtle "Ansalia" emerged from the water to survive, and established the Thirteen Federations of Eternal Night City here.
But this federation is in danger. People not only have to face the harm caused by the struggle for resources by the upper class of human society, but also face the evil intentions of this world - "natural disasters", "assimilation", and "skeleton beasts".
Mo Che, a mediocre skeletal beast investigator, was "unintentionally" pulled by a series of events and approached the world step by step, gaining a glimpse of his own destiny and that of all sentient beings.
