The story takes place in Yinxian Town, Huainan, where Xu Huai and Zhou Jin live.
When Zhou Jin was 15 years old, Xu Huai moved away without leaving a trace. The house opposite became empty, and an old couple and their grandson moved in.
Xu Huai's departure told everyone but her. He thought this was the best way. He thought it would not bring a burden to her. He thought she would forget him.
But she didn't expect that he had been gone for three years and she had been looking for him for three years.
"Xu Huai, the fog is rising again. When can I find you?"
Intention: Great love in the world