The world is shrouded in "red fog", cities have been reduced to nests of strange creatures, and humans can only survive on the endless ring road. Each person is bound to a "survival bracelet", and survival points are distributed daily that can be exchanged for supplies. After the 3-day novice protection period, extreme weather such as blazing heat, extreme cold, and acid rain will alternately come. The heroine Lin Yan carries the "Material Analysis" gold finger, which can identify the properties of materials and optimize their proportions, and drives a modified RV to embark on a journey to find the legendary "Coastal Safety Zone". On the way, she forms a survival team with the four male protagonists, using the road as a lifeline to guard the "remaining flames" of hope in despair.
