A sudden disaster reduced the world to ruins. In the apocalypse of snow and wind, Song Song, Lin Mei, Liu Ying, and Chen Mo became survivors struggling on the edge of life and death. The old order has collapsed, mutated creatures are rampant, and resource scarcity is everywhere. Every step forward is accompanied by unknown dangers and desperate tests.
Fleeing from the warehouse to the cave for safety, the blizzard is suffocating with fear, behind you are the footsteps of mutated creatures that follow you, and in front of you is a dark road ahead that you can't see clearly. After losing her close relative Xiaoer, Lin Mei regarded Song Song as her only support. In the desperate situation, she knelt down and tightly bound each other's fate with the promise of "committing herself to each other" - this emotion that sprouted between life and death was not only the glimmer of support for each other, but also made Song Song shoulder a heavier responsibility.
And this journey of survival is far from over. The threat of mutated creatures has never dissipated. Unknown secrets are hidden in abandoned laboratories, and there are even unknown forces and enemies who rob supplies lurking in the dark. Can they successfully get out of the crisis in the laboratory? Can a truly safe place be found? How will this bond born in desperate circumstances be tested in future challenges? Every step forward is a sharpening of the will to survive; every decision is related to each other's life and death.