After the last Great War, the world is covered by a black forest inhabited by fire demons. The survivors of the war, living in small areas protected by barriers, have been infected by a pathogen that causes them to spontaneously combust in the presence of ordinary fire. The only safe "fire", the only source of light and heat they can use, comes from the demons captured in the forest. And when the paths of a country girl and a young man from the capital cross, a new destiny opens up for them.
On a distant, icy planet, prisoners forced to excavate a rare energy source make a terrifying discovery.
Set two decades after the implosion of our society, the drama will follow Joel, a tough survivor, who is hired to smuggle a 14-year-old girl called Ellie out of an oppressive quarantine zone. What begins as a small job soon becomes a brutal and heartbreaking journey, as the two have to cross the United States and depend on each other to survive.
The Great Jahy, her right-hand man in charge in the Dark Kingdom, is a frightening figure, feared and revered by all. But when a magical girl destroys her precious mana crystal, Jahy becomes fragile and powerless, bringing the Dark Kingdom to ruin and throwing her into the human world! And soon Jahy will discover that planning the rebirth of the Dark Kingdom in a crumbling kitchenette is no easy task, especially when you have to work to pay the rent!