Lee Hongbin is a prisoner of the age of 22, prisoned over a crime he actually never performed. Thus, he has lost his every reason to live ever since the day he was doomed to be prisoned for the rest of his life.

      15 years from now, technology has upgraded in South Korea rapidly. Science fiction was brought to life, affecting the lives of everyone. Robots now exist and used excessively in the everyday lives of everyone. Machines we only imagined about in the past are now seen everywhere, more are being invented. And with the support of all this machines and upgraded technology, a program resembling a game where you can live in it, was inv