
In a world ravaged by catastrophe, civilization is confined to fortified strongholds that enforce a rigid social hierarchy. Ren Xiaosu, a resilient youth living on the fringes of society, fights for survival while caring for his younger brother, Yan Liuyuan. Navigating the treacherous divide between the impoverished refugees and the sheltered elite, he must hunt dangerous mutated wildlife and navigate the harsh economic realities of a freezing wasteland.
As he struggles to secure medicine, education, and basic necessities, Ren Xiaosu discovers that the world is far more mysterious and deadly than it seems. In this era of scarcity and corruption, every decision—from selling a live sparrow to choosing whether to buy a life-saving coat—is a gamble against death, forcing him to grow stronger simply to stay alive.