Occam Glanville, a soldier of the World Apocalypse Rehab Program, battles alongside thousands against a supernatural scourge known as the Mania. When a field mission goes awry and Occam unwittingly acquires the Mania themself, they must fight to keep it secret from their squadmates, while searching for the truth about this so-called plague. New allies and enemies abound, and Occam must make the right choice on who to trust… lest a fate worse than death await them, and even the whole world.