In 2110 AD, the development of AI technology has reached a new peak, and its product robots have begun to develop self-awareness and the ability to think independently. By 2120 AD, robots are basically the same as humans except that they are mechanical creations. At this point, scientists have classified robots into double S-class, S-class, and A to F classes. The only double-S robot, Satan, has intelligence far beyond that of humans, but it is still under the control of scientists. On New Year's Eve in 2130 AD, after being given a sleep command by scientists, it seized control of the central controller that night and launched an attack on humanity. With the huge disparity in combat power between humans and robots, where will humans go...