The red moon comes and the world order collapses overnight. Walking corpses are everywhere, monsters are rampant, and human civilization has become a remnant in the wasteland. Xia Qimingchen, an ordinary urban white-collar worker, accidentally activated the "Human Survivor Assistance System" at the moment of the apocalypse. This system has no intelligence, no tasks, only a cold data interface, which can convert the energy he gains from killing monsters into the improvement of his own attributes. Without the consciousness of a hero or the ambition to save the world, Xia Qimingchen's only thought is to survive. With the unique ability to digitize everything, he carefully explores this unrecognizable world, becoming a lonely data player in this doomsday where monsters are as dangerous as human nature.