In Man Xin's memory, there is a deserted wasteland with no grass growing on it, which is her missing childhood.
She was used to a cold and independent life until she moved into a new house and met her weird neighbor Du Rongli. He is calm, restrained, and lives like a cold, precise but temperatureless machine, but he unexpectedly possesses a password that can accurately unlock her inner defenses.
A sudden high fever tore open the man's invulnerable shell. In that dead night, when the cold miniature pendant slipped from his collar, when he clasped her wrist tightly with his hot palm, calling hoarsely over and over again in his sleep: "Xinxin, don't be afraid, brother will protect you..."
Man Xin's locked memory door finally resonated violently with physiological trembling.
She didn't remember the heavy snowfall, the thrilling kidnapping, or the time when a boy swallowed a mouth full of blood for her. But her soul remembers.
It turned out that the past she had forgotten never disappeared. They were hidden into the abyss by this man and turned into a string of passwords, a pendant, and a promise that they would not dare to forget even if they were burned out.
At the end of the barren memory, he finally waited for her reunion with a frost all over his body.