A historic cold wave strikes without warning, sending temperatures plunging below -25°C. The city loses water and power, order collapses, and survival becomes the only thing that matters.
Lin Ye is a freelance illustrator, cool-headed to the point of seeming heartless. Thanks to supplies she stockpiled in advance and a temperature-controlled space she acquired by chance, she becomes one of the survivors in the early days of the disaster. She rejects pointless sympathy, but when she encounters looters in her apartment building, she unexpectedly meets Lu Cheng, a former soldier. Cold and taciturn, with formidable combat skills, he becomes her sole companion in the depths of despair.
From a perilously unstable apartment building to a basement supermarket turned makeshift shelter, and then to a library reinforced as a fortress, they join forces to fight off thugs stealing supplies, repair burst pipes, and search for scarce gasoline. As they weather one brush with death after another, trust and affection begin to grow beneath their cold exteriors. Along the way, retired librarian Old Chen and auto mechanic Zhao Lei join them. Their small survival team begins to take shape, but they also come into possession of a map pointing to a
