In the new world left after the Great War, everything has changed. In the shadow of the huge city of Zalem, hanging in the sky, there is a metropolis where people live in the middle of tons of garbage dumped from above. Here crime flourishes, here people struggle for existence, and biology and technology have merged. Welcome to Iron City! Dyson Ido is a lone doctor repairing cyborgs and struggling to help the people of Iron City . But Ido leads a double life, because he can not forget why he was here, below, in the middle of this huge dump. Hugo, a young man who is interrupted by petty theft, decides that he was lucky, only a seemingly profitable scam suddenly leads Hugo to secrets hidden in his own past. Vector, the most powerful businessman in the city, wants to take possession of a new technology that can give him unlimited power. None of them know that soon their paths will converge, and the world around them will change forever.