Disasters such as acid rain, extreme cold, floods, and fire storms followed one after another, order collapsed, and humanity was revealed. Ye Qi, who was originally passive and world-weary, unexpectedly discovered that he could "upgrade" in disasters: acid rain hardened his skin, extreme cold made his body generate heat, floods gave him the ability to control water, and fire made him invulnerable to all poisons.
On the way to escape, Ye Qi rescued Nuan Nuan, a six-year-old girl who lost her parents, and has since assumed the responsibility of protecting her. The two went south, witnessed the separation of life and death in the ruins, and also met the "Tree King" and the domineering "Fire King" who were trying to establish a new order. In the end, Ye Qi found his mother Ye Heng, who had been missing for many years, in the legendary "Ruins" and solved the mystery of his life experience.
The novel cuts into the end of the world from a unique "lying flat" perspective. The protagonist does not insist on being a hero, but gradually takes on the important task of protecting others while passively becoming stronger, showing a warm chapter about survival, family affection and hope in a desperate world.