A sudden cold of -40 degrees Celsius plunged the city into ice. The ancestral cabin at the foot of the mountain on the outskirts of the city became Qi Yuan's last refuge. A "winter wave" far beyond the laws of the supernatural swept across. There were toeless "frost walkers" wandering in the snow, the blue "cold core" could freeze out all fires, and the basement contained "ice-bound ones" that were more terrifying than death - this was no ordinary winter, it was a purgatory that devoured living creatures.
Grandpa's old notebook before his death became Qi Yuan's only survival guide. He was forced to take over the duties of "housekeeper" from an ordinary person who passively avoided, and guarded the "tinder stone" hidden under the fireplace - the last hope to resist the cold winter. On the way, he met Xiao Shitou, a fire-veined child who was not afraid of the cold, and rescued the mysterious "rescue team member" Zhao Kai. Together, the three went deep into the volcanic ruins to search for fire crystals and explore the ancient civilization at the bottom of the frozen lake. They unexpectedly uncovered the truth about winter: this was the result of an ancient experiment out of control, and the fire-veiners were actually the "containers" of the fire stone. The mysterious organization "Winter Observer" even attempted to control the core of winter and plunge the world into permanent ice.
Outside the wooden house, the Frost Walkers and the Cold Core besiege them day and night; under the wooden house, the seal of the Winter Core is gradually loosened; in the hearts of people, trust and betrayal are intertwined. Qi Yuan must unite the scattered survivors, use axes, kerosene and shotguns to fight against the cold wave creations, and find a way to end the winter in a desperate situation. This is a battle about survival and protection, and it is also a tragic epic of fighting for spring in a frozen world - when the last flame is about to extinguish, can they keep the glimmer of human civilization?