The bone-eroding plague swept across the world, and the infected died of decay. There was no cure. New Ark City, the last bastion of mankind, is surviving with its high walls and epidemic prevention system, but the city is about to run out of vaccines. {Kane} is a scavenger in the city. His semi-mechanical transformation has made him immune to the plague. He has physical strength and perception far beyond ordinary people. He spends his days cleaning up infected corpses and mutated creatures outside the city. During a mission, he accidentally discovered a mysterious uninfected girl whose blood contained antibodies that inhibited the plague. Kane brought the girl back to the city, but she was killed. The city administrator tried to imprison the girl and extract antibodies just to save the life of the powerful. In order to protect the girl and save mankind, Kane took her to escape from New Ark City and embark on a dangerous journey to the biological laboratory of the old era. The siege of infected people, the interception and killing of looters outside the city, and the pressing pursuit of mechanical soldiers followed one after another. Kane must use his cyborg body to fight his way through, retrieve the antidote materials, develop a universal vaccine, and reverse the fate of mankind's destruction.
