Set against the backdrop of an antibiotic apocalypse in near future London. Rosa Scott, a brilliant and obsessive surgeon becomes Surgeon X, a vigilante doctor who uses experimental surgery and black market drugs to treat patients. But as Surgeon X, Rosa soon develops a godlike-complex, deciding who will live and who will die. Ultimately, she believes that to survive in this compromised world her own warped moral code is the one she must follow--even if it endangers those closest to her.