Overnight, a swarm of "Hanxing" meteorites hit the earth, and a global extreme cold storm suddenly descended. The temperature plummeted at a rate of ten degrees per hour, and finally stabilized in an eternal frozen state of minus 80 degrees Celsius. The oceans froze into huge ice sheets, cities were reduced to frozen ruins, power was cut off, and communications were paralyzed. More than 90% of humans froze to death or died in the chaos within the first seventy-two hours.
Yang Yi, an ordinary office worker, encountered a cold wave on his way home from overtime work. He managed to hide in an abandoned subway station with the help of the "constant temperature core" he obtained by chance - a mysterious meteorite fragment that can maintain warmth in a small area and slowly upgrade. In this world swallowed by ice and snow, he not only has to fight against the severe cold, search for supplies, and avoid the "ice beasts" mutated by low temperatures, but he also has to face human survivors who are also struggling to survive, and it is difficult to distinguish between good and evil. From an ordinary person who only wanted to protect himself, Yang Yi gradually grew into a leader who led his companions to establish the "Spark Colony". In the frozen apocalypse, Yang Yi used his body temperature and faith to ignite the fire of hope against the extreme cold.
