When the sun disappears and eternal night falls, plants and animals mutate, and dark monsters attack. As humanity, on the verge of entering the interstellar age, is struck down from the top of the pyramid, how will they survive this disaster? In a life-or-death situation, Chen Li obtains a doomsday survival system. As long as he survives each day, he gains points called survival points. Chen Li discovers that he can use survival points to upgrade various items and his own attributes. Diesel generators, geothermal power generation, biological power generation, radioisotope generators, Dyson spheres... Combat knives, electromagnetic knives, high-temperature ion vibration knives, planetary cutters... Power armor, bionic armor, Titan mechs... One after another, items exceeding the current era emerge from his hands, shocking humanity.