After a nuclear war broke out between humans and AI, humans created an electronic plague to paralyze all electronic equipment in order to eliminate the AI army, but it also led to technological regression. AI created the Y virus with the intention of killing all humans. Humans improved crops through genetically modified technology to reduce toxicity, but this also resulted in all humans being able to reproduce only through cloning technology. The appearance of a man who had been dormant for 50 years broke the balance. Heaven and hell are just a thought away.