One day after the first year of high school, Xiao Ran decided to stop talking forever. The shadow of her friend's death and the siege of campus violence made her choose to confront the world in an almost absurd way - silence, complete silence. Carrying a huge secret, she haunts the night at four in the morning and becomes a child of the night. Lin Zhichu, an unruly young man who transferred from Beijing, accidentally discovered Xiao Ran's secret. The two frustrated people met in the dark night, bursting out with the hope of redemption and the glimmer of love. When love was at its peak, Lin Zhichu suddenly disappeared without warning, just like the night melting into the night. Xiao Ran, who collapsed, decided to find him in her own way. To this end, she unblocked the language that had been imprisoned for several years and began to speak again. Her determination, perseverance, and courage led her step by step to find him. But between separation and reunion, new stories have filled each other's lives, and the two have been disappearing and disappearing like day and night. Life is not about meeting each other, but it is like participating in business.
